I love it. Keep making the long videos. I almost fell out of my chair laughing when all three motors started running and then you popped up the "only 10 more minutes". Great channel. Keep going!
Well done. Full marks for persevering. I would have used a hacksaw to make the slot and cut off the set screws. As the comment below mentioned, the die looked to be on the wrong way round. You want to start with the side with the tapered teeth. I also have bent the thin Dremel shafts. I would look for a collet and thicker shafts if you can find them. These tools consume a lot of air. If you can increase the pressure, you may get better torque. A lot of metal to be removed from the ER32 collet. I would select a tool which should not change dimension as it cuts, so perhaps the diamond burrs. The sanding drums will not last long. The grinding discs will wear down fast and then you will find it difficult to maintain the angle. You need accurate angle or else the collet will not grip. Dave.
Thanks Dave. Yeah a hacksaw would be much faster. But then I wouldn't get to test the little grinder :) That die is tappered on both sides. Have a look: goo.gl/pxUeKS I actually studied it before I used it. But it took a lot of force to cut the thread so it must be loosing its edge. I have a bigger arbor for my Dremel, but it's to big. It's only 0.05mm bigger then 3mm and I couldn't get it into the 3mm collet that came with the grinder. A bigger air compressor would certainly help. Mine only goes to about 7.5 bar I think will try those carbide boring bars to remove the bulk of the material. I was surprised that the opening for the tapered hole was of by almost a full mm. I'll probably dial-in the topslide using the collet chuck as a reference. Or perhaps a collet on an arbor because the taper inside the chuck might be at a slight angle.
Looks like your die was backwards there buddy, normally I use the tapered end at least for the first cut. I like your vids though they always make me laugh, both at your jokes and your machine work ; )
always fun to watch your stuff! keep us entertained! 1 MILLION VIEWS??? CONGRATULATIONS! 🎉. btw... I ALWAYS watch the entire length of the videos. cheers
I have an identical grinder. The instruction translated from Chinese say 4-5 drops of oil every 3-4 hours. So too much oil may be the reason it's leaking so much oil when you half fill the sight glass.
I watch til the end with few exceptions, always something in there worth learning. Thanks. I'd guess one of the stones would work best, or maybe a burr. Depends on how hard the collet chuck is. Thanks for making these!
Great to see another video from you. I enjoy all of them. And I do watch all the way to the end. Congratulations on a million views. Has always I Liked,Shared and added to Playlists. My way of saying thank you Sir. All my best. Bobby
Congrats on the one million views my friend! For what its worth I would try the stones first but not sure if the quality of stone Banggood provided with the set is up for the task! Looking forward to the results you get regrinding the collet chuck, also take a look at the collet chuck nut, I think this is adding to the run-out problem as well.
My experience with small grinding stones on the Dremel isn't great. Usually they quickly fall apart. Others have mentioned the collet nut as well. I got an extra collet nut from Banggood hoping it was from a different manufacturer. But they are all the same. But to be honest they look nicely made. The machining on the nut is definitely a step up compared to the collet chuck.
Yeah, a couple of my videos picked up a suspiciously high amount of views lately. But I'm not complaining :) BTW, Found any motor lately in the Canadian woods :)
I think the grinding disks are designed for steel. It is bad for the disk as it clogs up with aluminium and overheats. Very bad for bigger grinders as the disk may explode, send bits everywhere at bullet speed.
chexstix I have the same grinder more powerful compressor and it’s as strong as my dremel clone and less runout on the collet. Good tool post grinder for the smaller lathe
I guess It depends on what you' re expecting. It worked better then I though it would. And it even looks and feels half decent. not bad for 15 euro. To bad I now need to spend 500 euro on a better compressor :)
@@RolingmetalIt's possible to get away with using a band saw. Only reason I mention it is that the set screws put uneven pressure on the bearings. The slitted clamp would give all around even pressure.
I agree with a comment below, that grinder seems under powered, shitty vanes i expect, as for grinder options, I use the the little sanding drums with a dremel type rotary toll and am really impressed with it, the fie ones leave a really good finish. I've found them cheap little stone so wonky and they often heat up enough for whatever glue they use to fail and the end comes of, well done on a million views, All the best, Cliff
I guess it depends on what you're expecting. It definitely worked better the I though it would be, and I''m pretty sure my compressor was the limiting factor in this test. My experience with those small cheap knock off dremel tools isn't great either. And I think you right, those sandpaper drums are probably the best option for a good surface finish.
Hi there Mr rolinmetal, great entertaining video,great shots of the sequence of events,commentary is outstanding ,would you care to share your first name and what part of the globe you are on with your faithful subscribers,appreciate your time setting the video shots up.regards T W CANADA,S WEST COAST
I could have made both of those set screws on my converted Port-A-Band in under 2 minutes, sometime you lathe guys get crazy just to use your lathe. :)
tappen in de draaibank boorhouder in de losse kop, helemaal open werkstuk aanschuinen snijplaat tegen het werkstuk, boorhouder er tegen gedrukt met pinole buisje over arm snijplaathouder zodat arm af stut op zadel met linkerhand de 3 klauw draaien en tegelijkertijd met rechterhand druk op werkstuk houden met pinole
Hi, I would use Proxxon Grinding Wheels (10 discs) 477592 28302, because we dont know what hardness the collet holder is, if it hard as Hss you should use white grinding stones, the arbor you can cut down so the grinding wheel is close to the grinder the closer the better, AND be sure to true up the grinding wheel as CurlyG65 linked to th-cam.com/video/E2WHAU2OwaA/w-d-xo.html, if you do not true the grinding wheel up you wont get a good result because the grinder will be oscillating, when you have the collet chuck running true you can true up all the of the collets according to the bore :-), the inside angle in collet chuck is 8 degrees by the way. Good luck and looking forward to watch the video.
Those little stones need to stick out pretty far to be able to grind the hole depth of the collet. I'm thinking I might wear down that cutting disk, to a size larger than the spindle nose, and use it for grinding the taper. That way the arbor can stay very short. Thanks for the video link. I've actually already seen it. It more or less inspired me to get this little grinder :)
You dont have to have the centerline of the grinder at the 8 degrees, set your crossslide to 8 degrees and grinder to centerline then you have lots of clearence (when the hole you want to grind is so big, cant use this setup in small holes) even if the stones are smaller than the grinder, I have had great results with this kind of setup.
Yes, but he is also using a tapered stone. I think most stoned are designed to run parallel with the work. But I do think a slight angle on the grinder won't hurt.
You can true up the stone to 8 degrees, then you will have a broad flat on the grinding wheel (so it does not wear so fast), the Proxxon wheels I talked about is 22,5mm in diameter and 3,5mm thick, the angled grinder relative to the workpiece helps reducing chatter of the stone.
banggood not manufacture any they sell. there nothing wrong bout bangood.it could be ebay or amazon.or any other. its manufaturer error. mostly.that chinese weekend hobbiest who do your part. what you expert. better part than you make yourself. thats why they cheap
I love it. Keep making the long videos. I almost fell out of my chair laughing when all three motors started running and then you popped up the "only 10 more minutes". Great channel. Keep going!
Thank you. I'll try to make a new video tomorrow. Not too long of course :)
Well done. Full marks for persevering. I would have used a hacksaw to make the slot and cut off the set screws.
As the comment below mentioned, the die looked to be on the wrong way round. You want to start with the side with the tapered teeth.
I also have bent the thin Dremel shafts. I would look for a collet and thicker shafts if you can find them.
These tools consume a lot of air. If you can increase the pressure, you may get better torque.
A lot of metal to be removed from the ER32 collet. I would select a tool which should not change dimension as it cuts, so perhaps the diamond burrs. The sanding drums will not last long. The grinding discs will wear down fast and then you will find it difficult to maintain the angle. You need accurate angle or else the collet will not grip.
Dave.
Thanks Dave.
Yeah a hacksaw would be much faster. But then I wouldn't get to test the little grinder :)
That die is tappered on both sides. Have a look: goo.gl/pxUeKS
I actually studied it before I used it. But it took a lot of force to cut the thread so it must be loosing its edge.
I have a bigger arbor for my Dremel, but it's to big.
It's only 0.05mm bigger then 3mm and I couldn't get it into the 3mm collet that came with the grinder.
A bigger air compressor would certainly help. Mine only goes to about 7.5 bar
I think will try those carbide boring bars to remove the bulk of the material.
I was surprised that the opening for the tapered hole was of by almost a full mm.
I'll probably dial-in the topslide using the collet chuck as a reference. Or perhaps a collet on an arbor because the taper inside the chuck might be at a slight angle.
Looks like your die was backwards there buddy, normally I use the tapered end at least for the first cut. I like your vids though they always make me laugh, both at your jokes and your machine work ; )
Have a look at this: goo.gl/pxUeKS
The die seems to be tapered on both sides. And the widest opening looks to be the one I used.
Dont forget the camera work to pal !lol
always fun to watch your stuff! keep us entertained! 1 MILLION VIEWS??? CONGRATULATIONS! 🎉. btw... I ALWAYS watch the entire length of the videos. cheers
You must have some time to waste :)
For a spindle lock try a crescent wrench with a rag around the handle on one of your chuck jaws. Gently take up the slack.
I have an identical grinder. The instruction translated from Chinese say 4-5 drops of oil every 3-4 hours. So too much oil may be the reason it's leaking so much oil when you half fill the sight glass.
I would use one of the stones, closer to the grinding wheel on surface grinders and stuff.
I'll try them out. But my experience with those small stone is not great. The easily brack up.
What kind of oil should I use and what is the oil needed for?
we WANT the long videos! :)
You're not getting them :)
Nice job. To grind the collets I would use the rubber expanding arbor wrapped in dried herring, final finish will be perfect.
A dried herring?? Isn't that something they eat in Norway?
Rolingmetal They actually eat it??? Here in Panama it's used to grind stuff....
Probably, they dry a lot of fish.
I watch til the end with few exceptions, always something in there worth learning. Thanks. I'd guess one of the stones would work best, or maybe a burr. Depends on how hard the collet chuck is. Thanks for making these!
the looking glass thingy is an inline oiler use it please tool will last longer
It can be a little messy. Oil coming out of the grinder.
why oil ?
Great to see another video from you. I enjoy all of them. And I do watch all the way to the end. Congratulations on a million views. Has always I Liked,Shared and added to Playlists. My way of saying thank you Sir.
All my best.
Bobby
Thanks Bobby.
No wasted another 24 minuets of my life , but I enjoyed watching. All the best.
I would use either the largest diamond or stone bit. The sanding bits will break down too fast,
I'm wondering what kind of finish to expect form those diamond burrs. I'll probably try them all :)
You don't know till you try. I would run the lathe spindle slow, like under 200 rpms if possible.
P.S. Nothing wrong with a good long video when the subject is interesting.
Congrats on the one million views my friend! For what its worth I would try the stones first but not sure if the quality of stone Banggood provided with the set is up for the task! Looking forward to the results you get regrinding the collet chuck, also take a look at the collet chuck nut, I think this is adding to the run-out problem as well.
My experience with small grinding stones on the Dremel isn't great. Usually they quickly fall apart.
Others have mentioned the collet nut as well. I got an extra collet nut from Banggood hoping it was from a different manufacturer. But they are all the same. But to be honest they look nicely made. The machining on the nut is definitely a step up compared to the collet chuck.
Glad to see the channel is taking off brother!
Yeah, a couple of my videos picked up a suspiciously high amount of views lately. But I'm not complaining :)
BTW, Found any motor lately in the Canadian woods :)
Rolingmetal sure have. Search up project stubby torpedo!
I see you got you're self some cheap labour :)
Rolingmetal it isn’t cheap ;)
its not saw blade. its grinding disc. not good for flat skrewdriver slot that way. should need move it with Y axis :)
The grinder mount turned out pretty nice. Congrats on a million views.
Thanks John.
I think the grinding disks are designed for steel. It is bad for the disk as it clogs up with aluminium and overheats. Very bad for bigger grinders as the disk may explode, send bits everywhere at bullet speed.
You might be on to something there.
I made it to the end of your video and feel very accomplished.
That certainly is an accomplishment, especially on a long video like this one!
Nice video, but I'd be disappointed in that grinder. Even with a better compressor it seems woefully underpowered.
chexstix I have the same grinder more powerful compressor and it’s as strong as my dremel clone and less runout on the collet. Good tool post grinder for the smaller lathe
I guess It depends on what you' re expecting. It worked better then I though it would.
And it even looks and feels half decent. not bad for 15 euro.
To bad I now need to spend 500 euro on a better compressor :)
I don't mind long Vid's Nice job !
But they do take a long time to edit and upload :)
Aluminum set screws--meh. Probably better to have slit the holder itself and make a clamping holder.
I tried that once but that ended with a broken slitting saw.
@@RolingmetalIt's possible to get away with using a band saw. Only reason I mention it is that the set screws put uneven pressure on the bearings. The slitted clamp would give all around even pressure.
Congrats on a million veiws dude . i would use the stones for that job brother !!! i always stay till the end always !!!
I agree with a comment below, that grinder seems under powered, shitty vanes i expect, as for grinder options, I use the the little sanding drums with a dremel type rotary toll and am really impressed with it, the fie ones leave a really good finish. I've found them cheap little stone so wonky and they often heat up enough for whatever glue they use to fail and the end comes of,
well done on a million views,
All the best,
Cliff
I guess it depends on what you're expecting. It definitely worked better the I though it would be, and I''m pretty sure my compressor was the limiting factor in this test.
My experience with those small cheap knock off dremel tools isn't great either.
And I think you right, those sandpaper drums are probably the best option for a good surface finish.
Hi there Mr rolinmetal, great entertaining video,great shots of the sequence of events,commentary is outstanding ,would you care to share your first name and what part of the globe you are on with your faithful subscribers,appreciate your time setting the video shots up.regards T W CANADA,S WEST COAST
Thanks.
I'm from the Netherlands but I prefer to stay anonymous. That's probably better I case I say something stupid :)
buenos días dónde has querido usted este producto le agradecería me contestará por favor muchas gracias le queda agradecido de antemano
I could have made both of those set screws on my converted Port-A-Band in under 2 minutes, sometime you lathe guys get crazy just to use your lathe. :)
You're absolutely right. That was an awful long time to make some 2 set screws :)
tappen in de draaibank
boorhouder in de losse kop, helemaal open
werkstuk aanschuinen
snijplaat tegen het werkstuk, boorhouder er tegen gedrukt met pinole
buisje over arm snijplaathouder zodat arm af stut op zadel
met linkerhand de 3 klauw draaien en tegelijkertijd met rechterhand druk op werkstuk houden met pinole
Bedankt voor de tip Jan.
Hi, I would use Proxxon Grinding Wheels (10 discs) 477592 28302, because we dont know what hardness the collet holder is, if it hard as Hss you should use white grinding stones, the arbor you can cut down so the grinding wheel is close to the grinder the closer the better, AND be sure to true up the grinding wheel as CurlyG65 linked to th-cam.com/video/E2WHAU2OwaA/w-d-xo.html, if you do not true the grinding wheel up you wont get a good result because the grinder will be oscillating, when you have the collet chuck running true you can true up all the of the collets according to the bore :-), the inside angle in collet chuck is 8 degrees by the way. Good luck and looking forward to watch the video.
Those little stones need to stick out pretty far to be able to grind the hole depth of the collet.
I'm thinking I might wear down that cutting disk, to a size larger than the spindle nose, and use it for grinding the taper.
That way the arbor can stay very short.
Thanks for the video link. I've actually already seen it. It more or less inspired me to get this little grinder :)
You dont have to have the centerline of the grinder at the 8 degrees, set your crossslide to 8 degrees and grinder to centerline then you have lots of clearence (when the hole you want to grind is so big, cant use this setup in small holes) even if the stones are smaller than the grinder, I have had great results with this kind of setup.
Hi, this guy is setting his cross slide to 8 degrees and having the grinder at an angle th-cam.com/video/Ki02QpOQ6D0/w-d-xo.html
Yes, but he is also using a tapered stone. I think most stoned are designed to run parallel with the work.
But I do think a slight angle on the grinder won't hurt.
You can true up the stone to 8 degrees, then you will have a broad flat on the grinding wheel (so it does not wear so fast), the Proxxon wheels I talked about is 22,5mm in diameter and 3,5mm thick, the angled grinder relative to the workpiece helps reducing chatter of the stone.
"ill blame it on brexit" hahaha
Cheap Chinese Air Grinder.... A great noise generator.
More noise than grinding for sure. Especially with that compressor I got.
I will name that tune in 4!..... M
Ill bet they are all RED hahahahaha
I reached the end.
Congratulations on a job well done. But you didn't have to watch it all over again :)
think of the two million bleeding ears buddy lol.. u just gota find some crazy noise huh ;)
There will be more of this little dental drill in my next video.
Buy some ear-protection or look up the volume knob :)
lol. btw for hobbyist/small-shop i think an electric one with the extension would do just fine.
Your die but was in backwards
It' wasn't. Have a look at this: goo.gl/pxUeKS
waisted LOL !! I watched anyway!
I dont like this grinder, it needs too much air to work, no way on a small compressor like mine
I'd thumbs down this video if I hadn't been laughing so hard. +1
banggood not manufacture any they sell. there nothing wrong bout bangood.it could be ebay or amazon.or any other. its manufaturer error. mostly.that chinese weekend hobbiest who do your part. what you expert. better part than you make yourself. thats why they cheap