I love a video like this where a mistake is both shown to be rectified, and explained in detail as to why it was a mistake. It helps the rest of us avoid similar things! Great work as always Stefan.
I think these are the best kind of videos, where I get to see how to fix mistakes. I think it's the video format where I learn best, too. Thanks for sharing the process!
Don't worry to much about the egg, anyone can overlook something like that. You give such good explanation of methods, and I highly commend that in anyone, and when there is an audience you are teaching one student will be a little more astute.
Thanks for that last drawing! For me and others like me who are geometrically challenged, that was the first moment that I think I understood the issue. I greatly enjoy watching skilled craftspersons practice their crafts and it is particularly useful to see how you work through this kind of issue. Thanks for the wonderful content!
Stefan, you get forty out of ten for that piece of work. There are very few folk who can make a complete cock up into a beautiful learning. No body learns from getting stuff right. We all learn from our mistakes and Stefan is king for illustrating this point so well. I've been following you for three years it's worth every minute..
Most learning is the result of mistakes. That said, I should be a bloody Genius. I watch your channel to learn and this video carries an important lesson. Thanks for the lesson! KOKO!
Thanks for that visual explanation at the end. It really helped understand the issue and also understand why you may have missed it the first time around.
Hi Stefan, having followed you for many years now I'm not at all surprised that you have the grace to show mistakes. I keep on quoting Ponticus Pilate in Ben Hur 'We progress through error'. Still, kudos - and no, I did n't spot the error! Thanks for the drawing, even I can now see the 'challenge' from that.
Thanks for the drawing at the end. I could not work out from the previous comments what the issue was, and it only became clear once I saw the drawings. Neat work to get it re aligned.
Thanks for explaination, at first i didnt know what you were talking about and what the new alignment setup changed, but with the drawing it was very easy to understand
Thanks for the drawing. I didn't get why it needed to be 90deg instead of pointing to the center. I actually was about to point out the second set-up was worce and that you should burn out those pins again. Oh, yes. So, you see, the problem isn't youtube comments. It's figuring out which ones to ignore.
Fair play to you for admitting the mistake, that I for one certainly missed!, and not only that made it public. I like how you worked through the logic with the drawing at the end, it helped me too, fantastic, cheers, Dave
Thanks for the explanation, I saw the comment that you pinned but wasn’t exactly clear on what he said. Your drawing really helped explain how the 90 degree works at any point now.
Thank you Stefan. We’re always learning when we listen 😊. Occasionally we learn not to waste energy listening to a particular source. But most of the time we learn and make ourselves better…… especially when we are willing to be humble. I often rewatch your videos and peruse the comments as there is so much to learn in each episode. 👍👍😎👍👍
Ahhhhh! So that's what you guys were talking about! Now I get it. Thanks for the vid, for the geometry lesson, and the demonstration of removing the green Loctite -- I always wondered, but assumed nobody would ever have to undo it! I also really liked the conceptually-simple "inside, outside" straightedge with the two bars clamped together. Never occurred to me before. I guess if you needed such a thing very often, you could make one without the clamp! :)
Don't feel bad about egg on your face. I was totally clueless until you did the drawing explaining the problem/solution. Glad you look at your feed backs and learn from them. Good job Stefan
Thank you for showing that you are human like the rest of us. Humility is a great trait. Without it, we can not learn. Yes, the new solution has the many more most correctness result.
How one deals with mistakes is how I define a person. We all make them, none of us were born knowing it all. Most of the time when you work on your own, no now knows. You fix it and move on... However when you work with others, video them for the world to see or a customer figures it out. You have to own up to it and fix it. The egg washes off. And in the end by and large everyone is happy and will forget about it. When you have someone who will help you work through it is extremely valuable. Remember... the day you stop learning is they day they nail the lid down on you. Oh I almost forgot. I get the feeling, Like me. a zillion people learned something today from you Stefan....Thank you sir. Cheers!
I always tell people. It's not that you made a mistake, it's how you recover from it that counts. Thank you for sharing. (I plan on doing the same modifications to my "Sheckle" grinder!)
Great video and problem solving! Hardened methacrylates are dissolved by DCM and nitromethane but rather slowly. I believe the Loctite remover is nitromemethane. One trick is to make a jelly by mixing DCM with fumed silica as for thickening marine epoxy to a thick paste. Apply and wrap it in PE film and let it sit for some time and the loctite will become rather soft. Burning away the locktite gives on the other hand the best possible primer for the next attempt...
Not a machinist, think I missed my calling. Thoroughly enjoy your videos and have learned so much from them, even more so as I follow along and I think you've made a mistake and further along the video see that you didn't. Even more so, learning when you do make the occasional mistake, catch it, and correct it with new techniques and explanations. Thank you!
It is better to interact positively with one another, complimenting encouraging guiding.. rather than put downs. That way we all become better, not only at the task at hand, but more importantly as human beings.
I know... You just did that to see if anyone was watching.....LOL To err is human..... I'll continue to watch, Love your channel. Keep up the goood work....!
Very cool. I thought you were getting rid the the eccentric for a fixed concentric pin. Very cool though, and great explanation! Strive to be better everyday is the way to get better. Great work, and thank you for sharing!
Great follow up video, I wouldn't have thought of this. I was thinking that machining a L shaped plate with a hole in the corner will allow you to fixture the 2 hard stops in relation to a center pin without parallels.
I think every thing in your original 'rant' (really wasn't that ranty, seemed very calm and friendly to me), still stands. The person who pointed out the issue did so in a super friendly way too, so wasn't at odds to your dislike of cranky youtube "I would have done it better" people. Mistake videos are the best anyway, always learn a bit more when you see the workings out of the previously incorrect workings outs.
You might want to look into a small oxygen concentrator for your torch rig. Because of the demographic of people that use them, there are plenty on the second hand market. They are perfect for small torches. Industrial gas in small bottles is something most suppliers just don't want to bother with.
The flow rates at higher concentrations on medical oxygen concentrators is quite low. Unless you have a storage solution, they are a waste of time. DIY storage and pressurising solutions make their use more expensive and less safe than oxygen cylinders.
@@nrml76 While you are not going to be cutting steel with them, I see a lot of people using them for the kind of fine work that Stefan does. Primarily silver soldering small chunks of carbide with a micro torch. Many jewelers and musical instrument repair techs use them all the time. They are a great match to go with the small disposable propane cylinder, that you can see in this video. He was complaining that he could no longer get the tiny O2 cylinders that he used to, and this is a viable alternative.
Nice to see you finishing the D-bit upgrade, good video series. Regarding the clamping mechanism, is it preferred to have a hardened clamping shoe against the hardened shaft rather than a soft sacrificial clamping shoe such as brass?
Eric Bouchard one think was bugging me! 😮I have impression the excentric pin is for ajusting angle travel. But With your demo, excentric is ajusting zero offset. If i plan this mod, placing the stop pin is the key to sucess😊 thank’s verry good explanation
That's a good way of doing it. I think there might have been a faster/easier way that would have had very close (probably not measurable difference) correspondence to the way you did it. Take that plastic 90 degree triangle (after checking that it is indeed very close to 90 degrees), put a point in the center of rotation, bed the triangle against the faces on both stop pins, and align the bisecting angle line over the point of rotation. That would set both stops at the same time, and you should be able to get within a very small error aligning the bisecting line over the point. Obviously you could make a specialized machinist's square to do that and maybe be more accurate, but it might be more reasonable to grind the plastic square to exactly 90 degrees so you have a transparent area over where the center point will be.
Stefan, while this solution takes care of the error induced by the radial movement of the excentric pin, I think you will still have the error induced by its tangential movement. It is the tangential movement you use to dial in the perfect 0 degrees , which will lead to the 90 degrees stop being off.
Upgrade/correction understood, thanks for sharing. Though I have never tried to grind (with any kind of precision) a radius on the S0-type grinder, am I correct that only one of the ends really matters? I guess it is, indeed, so, since the eccentric adjuster cannot fine tune the 90 deg range. It can only precisely set one of the two ending points. If one end is set, say, at exactly 0 deg using the eccentric adjuster then the other point will be roughly at 90 deg, and vice-versa. BR, Thanos
I really hope my original comment wasn't perceived to be snarky or negative,and I totally agree with your sentiment/rant about negative and personal attack comments as totally unnecessary (and also counterproductive!). And the maximum error in this case was really small - but the geometrical background thinking could lead to bigger errors in other, larger circumstances :) To bad the paintwork had to be damaged though :) Keep up the good work, I've learned a lot from watching your content! :D
Der Fehler wäre mir so nicht aufgefallen, aber wo du es erklärt hast, war es recht offensichtlich. Das man mal ein Knoten im Kopf hat ist normal, ist nur wichtig, dass der gleiche Fehler nicht dreimal passiert😅. Mit deinem Gasflaschen Problem, würde ich entweder eine 5L Acetylen Flasche besorgen (vom Heizungsbauer) oder 10L, ist in meinen Augen das bessere Brenngas, weil man auch sehr punktuell arbeiten kann, das habe ich mit Propan Sauerstoff nie hinbekommen. Alternativ gibt es auch kleine (1-2L oder sowas) Mehrwegpropan Flaschen z.B. an Dachdecker Lötkolben, die werden aber nicht getauscht, da muss man dann einen Umfüllbogen basteln oder ein Stutzen für die LPG Tankstelle😂
kleiner Tipp für dein Autogen-Brenner: 10-Liter Eigentumsflasche Sauerstoff + 5 kg Propan/Butan-Eigentumflasche (handelsüblich im Campingbereich) Beides lässt sich im Baumarkt problemlos tauschen.
I would have made the same mistake. Had to watch it over a few times to understand. Essentially the stop pin creates an offset which you needed to account for. Better to catch that now than after assembly and having ground in a tool.
Did you measure in some manor a before and after to see what gain you achieved. You did correct a problem but was it worth the time invested. I'm old and retired with all the time I have now to play I don't think I would have burned the paint off for this. I guess I just don't see the advantage on such small radiuses that this machine works for it to be worthwhile, Love the videos.
I’m having one of those moments when you have shown physical reality to work a certain way, and yet I’m still confused as to why your calculation wasn’t right the first time. Does that arc cover more than 90°? I’m going to stare at this some more.
...I thought one might calibrate the 90 degrees because of that angle drift along the radial distance, thanks to the eccentric pin. Now, one cannot adjust and thereby calibrate the angular travel when adjusting the pin?
Mistakes are only made by those that actually 'do stuff' and quite often (although not always) discovered by those that 'don't'. Comments by a DO-ER Brit, though some might say 'a DOUR Brit'.
I have the same issue with my import D-bit grinder and thought that Deckels design with 2 eccentric stops 90 degrees from each other was the best way to ensure angular position. What was your reasoning for choosing your method over Deckels method? Im not saying one way is better than the other, I’m just looking for input when I go to repair mine.
It seems like now your adjustment is disabled, so you always have 90 degrees. Whereas before, you could adjust it if the pin wore down? I thought you did it on purpose so the adjustment would work.
The eccentric pin is for zeroing one end, but with the goal of keeping both ends 90 degrees apart, the original alignment adjusted the range as well as offset (very slightly), because as the eccentric moved to the outside of the angled stop pins there was a larger of travel and moving to the inside a shorter one, only being exactly 90if it hit the centre of the flat pin faces
@@2lefThumbs The 0 point is adjustable via the ring, so I thought the eccentric was just for adjusting the precise amount of rotation. But I guess his goal was to keep a stable 90* even if the pin shifts slightly over time.
@@grippgoat I see what you're saying (now) and it makes sense to me that the eccentric could be used that way to fine tune the range and compensate for wear in the original cast iron, or in Stefan's first pin layout👍 my previous comment was an overly confident attempt to explain what I *thought* was Stefan's reason for changing the orientation, but thinking more about it, the new orientation would seem to make the eccentric pretty much reduntant 🤔
@@grippgoat yeah, in the 2.0 video he starts with being annoyed that the adjustment pin affects the 90 deg angle, as he needs that very often. Which is why he put those two flats in there.. the only problem was that he aligned the two flats to the center (>90deg) instead of 90 deg, which results in the same annoying behavior that the unit had before.. just differently.
I learned nothing on video 1 or 2. Because I was only listening not watching. So this works for me either way. Was wondering why we can’t lock tight things like brigades and skyscrapers.
Would have been interesting to see the real world measurement difference on the first attempt. The contact point would have only moved in and out a couple thou. Wonder what that would have done to the angle?
Pro tipp: billige Sackkarre kaufen, beide Gasflaschen mit einem Spanngurt drauf festspannen, Projekt fancy Flaschenhalter für weitere 20 Jahre vor sich her schieben.
Yeah, but you have to overheat it quite a bit to completely destroy and burn it away, otherwise you have the loctite remaints in the gap, that are still quite well holding.
![🔴 ฟุตบอลแชมป์กีฬา 7HD แชมเปียน คัพ 2024 [รอบรองชนะเลิศ]](http://i.ytimg.com/vi/zPm8ClLVhoE/mqdefault.jpg)
It's one thing to admit to a mistake to someone, it's another to make a whole video about it! Keep up the great work!
True. I think there is a word for it.... integrity.
I love a video like this where a mistake is both shown to be rectified, and explained in detail as to why it was a mistake. It helps the rest of us avoid similar things! Great work as always Stefan.
I think these are the best kind of videos, where I get to see how to fix mistakes. I think it's the video format where I learn best, too. Thanks for sharing the process!
They do say the difference between a professional and amateur isn't that professional's don't make mistakes, they just know how to fix them
Being humble shows character! Well done
Don't worry to much about the egg, anyone can overlook something like that. You give such good explanation of methods, and I highly commend that in anyone, and when there is an audience you are teaching one student will be a little more astute.
Thanks for that last drawing! For me and others like me who are geometrically challenged, that was the first moment that I think I understood the issue. I greatly enjoy watching skilled craftspersons practice their crafts and it is particularly useful to see how you work through this kind of issue. Thanks for the wonderful content!
Stefan, you get forty out of ten for that piece of work. There are very few folk who can make a complete cock up into a beautiful learning. No body learns from getting stuff right. We all learn from our mistakes and Stefan is king for illustrating this point so well. I've been following you for three years it's worth every minute..
Most learning is the result of mistakes. That said, I should be a bloody Genius. I watch your channel to learn and this video carries an important lesson. Thanks for the lesson! KOKO!
Thanks for that visual explanation at the end. It really helped understand the issue and also understand why you may have missed it the first time around.
Very good followup. Wasn't sure what you were doing until you showed the final drawing, then it made complete sense!
Mr Murphy is always watching…. You’re a good dude Stephan!
Everyone makes mistakes, even Herr Gotteswinter. Always good stuff.
Hi Stefan, having followed you for many years now I'm not at all surprised that you have the grace to show mistakes. I keep on quoting Ponticus Pilate in Ben Hur 'We progress through error'. Still, kudos - and no, I did n't spot the error! Thanks for the drawing, even I can now see the 'challenge' from that.
I was half expecting a Vernier scale, but if any cutting tool requires that level of precision you have the Deckel.
Thanks for completing the trilogy.
Thanks for the drawing at the end. I could not work out from the previous comments what the issue was, and it only became clear once I saw the drawings.
Neat work to get it re aligned.
I understand but did not catch it in the last video. Great community and thanks for sharing this!
much respect there Stefan for showing your error and better still the fix ( no re machining required )
Thanks for explaination, at first i didnt know what you were talking about and what the new alignment setup changed, but with the drawing it was very easy to understand
This is one of the reasons I like your channel above many others, Stefan. You have the integrity to show your mistakes and admit them.
Makes you even better!
ATB, Robin
You're welcome! Fun little thinking exercise on geometry and constraints. Good video describing the effect and the practical solution.
Thanks for the drawing. I didn't get why it needed to be 90deg instead of pointing to the center. I actually was about to point out the second set-up was worce and that you should burn out those pins again. Oh, yes. So, you see, the problem isn't youtube comments. It's figuring out which ones to ignore.
First I didn't get it but when you showed it on paper, it makes perfect sense. Thanks for that.
Fair play to you for admitting the mistake, that I for one certainly missed!, and not only that made it public. I like how you worked through the logic with the drawing at the end, it helped me too, fantastic, cheers, Dave
Had no idea what you were trying to do till you showed the sketch Another great video
Thanks for the explanation, I saw the comment that you pinned but wasn’t exactly clear on what he said. Your drawing really helped explain how the 90 degree works at any point now.
We are always learning until we reach the point where we think we know everything! Great follow-up to the previous video.
Thank you Stefan. We’re always learning when we listen 😊. Occasionally we learn not to waste energy listening to a particular source. But most of the time we learn and make ourselves better…… especially when we are willing to be humble. I often rewatch your videos and peruse the comments as there is so much to learn in each episode. 👍👍😎👍👍
Thank you Stefan for explaining the issue.
Ahhhhh! So that's what you guys were talking about! Now I get it. Thanks for the vid, for the geometry lesson, and the demonstration of removing the green Loctite -- I always wondered, but assumed nobody would ever have to undo it! I also really liked the conceptually-simple "inside, outside" straightedge with the two bars clamped together. Never occurred to me before. I guess if you needed such a thing very often, you could make one without the clamp! :)
Don't feel bad about egg on your face. I was totally clueless until you did the drawing explaining the problem/solution. Glad you look at your feed backs and learn from them. Good job Stefan
Thanks for sharing this. CAD is our best friend to look at these situations.
Thank you for taking time to make this video to clearly show what the error was. You're the best, Stefan!
Thank you for showing that you are human like the rest of us. Humility is a great trait. Without it, we can not learn. Yes, the new solution has the many more most correctness result.
How one deals with mistakes is how I define a person. We all make them, none of us were born knowing it all. Most of the time when you work on your own, no now knows. You fix it and move on... However when you work with others, video them for the world to see or a customer figures it out. You have to own up to it and fix it. The egg washes off. And in the end by and large everyone is happy and will forget about it. When you have someone who will help you work through it is extremely valuable. Remember... the day you stop learning is they day they nail the lid down on you.
Oh I almost forgot. I get the feeling, Like me. a zillion people learned something today from you Stefan....Thank you sir. Cheers!
The egg washes off, but the crow leaves an after taste.
I'm all the wiser for this video ... thanks for making it.
I always tell people. It's not that you made a mistake, it's how you recover from it that counts.
Thank you for sharing. (I plan on doing the same modifications to my "Sheckle" grinder!)
Great video and problem solving!
Hardened methacrylates are dissolved by DCM and nitromethane but rather slowly. I believe the Loctite remover is nitromemethane. One trick is to make a jelly by mixing DCM with fumed silica as for thickening marine epoxy to a thick paste. Apply and wrap it in PE film and let it sit for some time and the loctite will become rather soft. Burning away the locktite gives on the other hand the best possible primer for the next attempt...
Thanks for the explanation. I didn't understand the problem at first.
Not a machinist, think I missed my calling. Thoroughly enjoy your videos and have learned so much from them, even more so as I follow along and I think you've made a mistake and further along the video see that you didn't. Even more so, learning when you do make the occasional mistake, catch it, and correct it with new techniques and explanations. Thank you!
A very good explanation, it is very obvious now. Thanks!
It is better to interact positively with one another, complimenting encouraging guiding.. rather than put downs. That way we all become better, not only at the task at hand, but more importantly as human beings.
Thanks for showing how you noodled that through.
Huh. Pretty sure I wouldn't have caught that the first time, either, it's pretty devilish. Cool video!
I like how the description says severe mistake but it actually seems fairly minor when it comes to the fix.
Outstanding way to deal woth errors. 👏
Great explanation and clarification.
I know... You just did that to see if anyone was watching.....LOL To err is human..... I'll continue to watch, Love your channel. Keep up the goood work....!
Toller Umbau, gut erklärt, ich muss bei meiner Maschine schauen wie dass bei mir aussieht. Danke für das Zeigen. Gruß Günter
Thanks for yet another great video!
good job stefan
Excellent as always!!
Only real engeneer search fot his own mistakes, all the time.
👍👍👍👍👍
I liked your rant on comments
Been there - done that. Wish I could say I spotted that. Great learning experience but I hate learning experiences.
Hey we all make mistakes.. good on you for making it a teaching moment..
Very cool. I thought you were getting rid the the eccentric for a fixed concentric pin. Very cool though, and great explanation! Strive to be better everyday is the way to get better. Great work, and thank you for sharing!
Great follow up video, I wouldn't have thought of this. I was thinking that machining a L shaped plate with a hole in the corner will allow you to fixture the 2 hard stops in relation to a center pin without parallels.
I think every thing in your original 'rant' (really wasn't that ranty, seemed very calm and friendly to me), still stands. The person who pointed out the issue did so in a super friendly way too, so wasn't at odds to your dislike of cranky youtube "I would have done it better" people. Mistake videos are the best anyway, always learn a bit more when you see the workings out of the previously incorrect workings outs.
You might want to look into a small oxygen concentrator for your torch rig. Because of the demographic of people that use them, there are plenty on the second hand market. They are perfect for small torches. Industrial gas in small bottles is something most suppliers just don't want to bother with.
"demographic" - savage :P
Nighthawkinlight recently made a Video about the use of medical oxygen enrichers for workshop purposes.
The flow rates at higher concentrations on medical oxygen concentrators is quite low. Unless you have a storage solution, they are a waste of time. DIY storage and pressurising solutions make their use more expensive and less safe than oxygen cylinders.
@@nrml76 While you are not going to be cutting steel with them, I see a lot of people using them for the kind of fine work that Stefan does. Primarily silver soldering small chunks of carbide with a micro torch. Many jewelers and musical instrument repair techs use them all the time. They are a great match to go with the small disposable propane cylinder, that you can see in this video. He was complaining that he could no longer get the tiny O2 cylinders that he used to, and this is a viable alternative.
nice rectification !
cheers ben.
I like to think I am good at math and especially geometry, and it was only at minute 13 that I fully understood your error. ;-)
Nice to see you finishing the D-bit upgrade, good video series. Regarding the clamping mechanism, is it preferred to have a hardened clamping shoe against the hardened shaft rather than a soft sacrificial clamping shoe such as brass?
Eric Bouchard one think was bugging me! 😮I have impression the excentric pin is for ajusting angle travel. But With your demo, excentric is ajusting zero offset. If i plan this mod, placing the stop pin is the key to sucess😊 thank’s verry good explanation
As always, thank you! 😊
That's a good way of doing it. I think there might have been a faster/easier way that would have had very close (probably not measurable difference) correspondence to the way you did it.
Take that plastic 90 degree triangle (after checking that it is indeed very close to 90 degrees), put a point in the center of rotation, bed the triangle against the faces on both stop pins, and align the bisecting angle line over the point of rotation. That would set both stops at the same time, and you should be able to get within a very small error aligning the bisecting line over the point.
Obviously you could make a specialized machinist's square to do that and maybe be more accurate, but it might be more reasonable to grind the plastic square to exactly 90 degrees so you have a transparent area over where the center point will be.
Stefan, while this solution takes care of the error induced by the radial movement of the excentric pin, I think you will still have the error induced by its tangential movement. It is the tangential movement you use to dial in the perfect 0 degrees , which will lead to the 90 degrees stop being off.
Upgrade/correction understood, thanks for sharing.
Though I have never tried to grind (with any kind of precision) a radius on the S0-type grinder, am I correct that only one of the ends really matters?
I guess it is, indeed, so, since the eccentric adjuster cannot fine tune the 90 deg range. It can only precisely set one of the two ending points. If one end is set, say, at exactly 0 deg using the eccentric adjuster then the other point will be roughly at 90 deg, and vice-versa.
BR,
Thanos
I really hope my original comment wasn't perceived to be snarky or negative,and I totally agree with your sentiment/rant about negative and personal attack comments as totally unnecessary (and also counterproductive!). And the maximum error in this case was really small - but the geometrical background thinking could lead to bigger errors in other, larger circumstances :)
To bad the paintwork had to be damaged though :) Keep up the good work, I've learned a lot from watching your content! :D
Not negative at all! You where the first one pointing it out, and am very glad you did, otherwise i would be stuck with my error.
Der Fehler wäre mir so nicht aufgefallen, aber wo du es erklärt hast, war es recht offensichtlich. Das man mal ein Knoten im Kopf hat ist normal, ist nur wichtig, dass der gleiche Fehler nicht dreimal passiert😅.
Mit deinem Gasflaschen Problem, würde ich entweder eine 5L Acetylen Flasche besorgen (vom Heizungsbauer) oder 10L, ist in meinen Augen das bessere Brenngas, weil man auch sehr punktuell arbeiten kann, das habe ich mit Propan Sauerstoff nie hinbekommen. Alternativ gibt es auch kleine (1-2L oder sowas) Mehrwegpropan Flaschen z.B. an Dachdecker Lötkolben, die werden aber nicht getauscht, da muss man dann einen Umfüllbogen basteln oder ein Stutzen für die LPG Tankstelle😂
Interesting fact. Thanks for the video.
Kudos to the nice Viewer !
kleiner Tipp für dein Autogen-Brenner:
10-Liter Eigentumsflasche Sauerstoff + 5 kg Propan/Butan-Eigentumflasche (handelsüblich im Campingbereich)
Beides lässt sich im Baumarkt problemlos tauschen.
Jup, genau das hab ich vor.
HVAC suppliers often have the smaller oxygen bottles because technicians/installers carry their torch sets on jobs and often up ladders
Its actually that 2nd diagram at the end that makes it obvious what the problem was.
I would have made the same mistake. Had to watch it over a few times to understand. Essentially the stop pin creates an offset which you needed to account for. Better to catch that now than after assembly and having ground in a tool.
Without a mistake we could not learn.
Thank you.
Did you measure in some manor a before and after to see what gain you achieved. You did correct a problem but was it worth the time invested. I'm old and retired with all the time I have now to play I don't think I would have burned the paint off for this. I guess I just don't see the advantage on such small radiuses that this machine works for it to be worthwhile, Love the videos.
I’m having one of those moments when you have shown physical reality to work a certain way, and yet I’m still confused as to why your calculation wasn’t right the first time. Does that arc cover more than 90°? I’m going to stare at this some more.
...I thought one might calibrate the 90 degrees because of that angle drift along the radial distance, thanks to the eccentric pin. Now, one cannot adjust and thereby calibrate the angular travel when adjusting the pin?
Hello Stefan, I whas wondering last time why you did not used square (winkel) oke there are a lot way to Rome and I whas also wrong 👍😉😉
now with this mistke we can call this a serie.
Mistakes are only made by those that actually 'do stuff' and quite often (although not always) discovered by those that 'don't'.
Comments by a DO-ER Brit, though some might say 'a DOUR Brit'.
I have the same issue with my import D-bit grinder and thought that Deckels design with 2 eccentric stops 90 degrees from each other was the best way to ensure angular position. What was your reasoning for choosing your method over Deckels method? Im not saying one way is better than the other, I’m just looking for input when I go to repair mine.
have you ever considered sing an oxygen concentrator for brazing? Depending on your use case it might be worth it.
Yes, but 10l O2 bottles are a convenience item that I can changed/filledget from the home improvement store 6 days a week :)
It seems like now your adjustment is disabled, so you always have 90 degrees. Whereas before, you could adjust it if the pin wore down? I thought you did it on purpose so the adjustment would work.
Good thinking, but in reality, if you spin the pin then you will have a new contact surface even now.
The eccentric pin is for zeroing one end, but with the goal of keeping both ends 90 degrees apart, the original alignment adjusted the range as well as offset (very slightly), because as the eccentric moved to the outside of the angled stop pins there was a larger of travel and moving to the inside a shorter one, only being exactly 90if it hit the centre of the flat pin faces
@@2lefThumbs The 0 point is adjustable via the ring, so I thought the eccentric was just for adjusting the precise amount of rotation. But I guess his goal was to keep a stable 90* even if the pin shifts slightly over time.
@@grippgoat I see what you're saying (now) and it makes sense to me that the eccentric could be used that way to fine tune the range and compensate for wear in the original cast iron, or in Stefan's first pin layout👍 my previous comment was an overly confident attempt to explain what I *thought* was Stefan's reason for changing the orientation, but thinking more about it, the new orientation would seem to make the eccentric pretty much reduntant 🤔
@@grippgoat yeah, in the 2.0 video he starts with being annoyed that the adjustment pin affects the 90 deg angle, as he needs that very often. Which is why he put those two flats in there.. the only problem was that he aligned the two flats to the center (>90deg) instead of 90 deg, which results in the same annoying behavior that the unit had before.. just differently.
i kept staring at the drawing in the previous video and going "there's something wrong with this" but i couldn't put my finger on it
I learned nothing on video 1 or 2. Because I was only listening not watching. So this works for me either way.
Was wondering why we can’t lock tight things like brigades and skyscrapers.
Would have been interesting to see the real world measurement difference on the first attempt. The contact point would have only moved in and out a couple thou. Wonder what that would have done to the angle?
Not much :D
I think the error was like 50 microns at a radius of 100mm.
That's the way it often goes. Go on a rant and it almost immediately comes back to bite you.
good roll model ...... haahaa, these videos normally involve me tearing somthing apart in my shop
The mind is like a parachute, it only works when it's open.
Pro tipp: billige Sackkarre kaufen, beide Gasflaschen mit einem Spanngurt drauf festspannen, Projekt fancy Flaschenhalter für weitere 20 Jahre vor sich her schieben.
Hilfe, wenn ich das mach, hab ich zur Rente immernoch die Sackkarre mit Spanngurt :D
I would've definitely made the same mistake.
Please make a T-shirt with "Disappointed Stefan face" And the text "The Corrector" (in appropriate font) ❤
Wie groß wird denn der Winkelfehler der ersten Version? War es das wert, dafür die Farbe zu verbrennen?
Ich hatte es im Cad aufgemalt, ist ein minimaler Fehler, aber ich wollts nicht lassen, weils mich ärgert :D
We can't all be Dan Gelbarts. I didn't see the problem either. I'd leave the paint as a reminder.
We all make mistakes, we're all human.
I thought it only took about 300 or so degrees f to release most loctite?
Yeah, but you have to overheat it quite a bit to completely destroy and burn it away, otherwise you have the loctite remaints in the gap, that are still quite well holding.