G’day Bob, nicely done on something so small. Imagine in the old days when it was done by hand, what a job and first to mark it out on something so small. You are blessed to have a dividing head and a Sherline lathe. Keep up the good work, cheers. Peter
Thanks Peter...it is nice to have the CNC equipment to speed things along...but if you're interested you can see on the lathe set up video I made previously the index plates I used to use...I was concerned that with a dividing head backlash might arise so I avoided a rotary table, but I was wrong...my CNC rotary table works as well as the index plates...but the rotary table does have limitations...it does not allow the use of collets on the head stock...you are limited to the 3 or 4 jaw chuck...so when I make pinions or any really small parts that require a collet I revert back to the index plates...the old ways never completely disappear (I hope)...bob
You.... again, seems everytime I search for advise I end up here. :-). I am not making a clock, but I will watch and give it a try. Hopefully finishing a ratchet.
Another excellent video. Thanks for taking the time and trouble to impart your knowledge and experience. I appreciate it very much and really enjoy watching you at work.
Thanks Brian...I get a bit of a kick out of figuring out the best way to present the build...it's fun to cut the part...but it's fun too video it too...bob
Robertt, Your videos are getting better and better with each one. I do have a couple questions. Love you showing what a carriage clock is for us "non" clock people. 1) You said there was an off set to make it work better. Why is that? Could you please explain? I'm thinking the hole is off set from the center line. 2) It didn't look like the lathe stock was setup for drilling the offset. Did you just skip that part of the video? 3) your microscopes look like they have some high quality lighting. Do you know the brand?
Answer to #1: Most ratchets on clocks are holding back the force of a powerful spring (very powerful with a fusee)...the offset cut locks the click much more securely then a radial cut...it creates an undercut (radial rake)...this ratchet I made was for an alarm setting arm so no real power...but it was still offset. The hole is not offset...you line up with the center of the hole then offset from there using a test indicator or just the handwheel...this ratchet did not have a collar so you could offset to either side as the ratchet is reversible.#2...It was offset I used 0.0343" I believe...sorry that was not clearer but that is a small amount and may not have been clear from the camera position...but the final look around the teeth shows the offset that was achieved.#3...They are LED rings...not that expensive nowadays...no name I can see...I think they are imports...they work well but I do use bottom lighting at times with the toolmakers microscope...the ratchet was flat...not all threads and the like are like that and some of my set ups are 3D so more creative lighting helps. The Nikon works well with the ring when looking through the eye pieces...but maybe not all that great with the video eye piece...it is not a real quality video eye piece..an import I was messing about with. I have another stereo microscope on my watchmakers lathe (not shown in video) and I use 2 halogen goose-neck lamps...usually one on either side to get rid of shadows...I use it with the Nikon at times as well. I'm getting older and good lighting is essential.
Hi Craig...I use stones as a finishing step...if you wish to cut a polished surface you must use a polished cutting edge...I use the India and Hard Arkansas on gravers mostly...and to polish lathe bits...I used the stones on the ratchet as it was very close to the finished thickness and it cuts very smoothly and I needed to remove the effects of the parting off blade. Broaches I do not sharpen as a rule... a 10 broach set is about $15-20...and bigger broaches I make myself...anything that is hardened I use a stone on...of course the stone could be on my surface grinder...which I do use on the bigger broaches I make...the broaches I used in this video are cutting broaches...I also use finishing broaches...and I use blue steel rods to make 3 sided broaches as well...there could very well be other ways...I kinda stick with stuff that works for me...did ya like the video?...bob
G’day Bob, nicely done on something so small. Imagine in the old days when it was done by hand, what a job and first to mark it out on something so small. You are blessed to have a dividing head and a Sherline lathe. Keep up the good work, cheers.
Peter
Thanks Peter...it is nice to have the CNC equipment to speed things along...but if you're interested you can see on the lathe set up video I made previously the index plates I used to use...I was concerned that with a dividing head backlash might arise so I avoided a rotary table, but I was wrong...my CNC rotary table works as well as the index plates...but the rotary table does have limitations...it does not allow the use of collets on the head stock...you are limited to the 3 or 4 jaw chuck...so when I make pinions or any really small parts that require a collet I revert back to the index plates...the old ways never completely disappear (I hope)...bob
The old ways will always hang around because No Batteries Required
You.... again, seems everytime I search for advise I end up here. :-). I am not making a clock, but I will watch and give it a try. Hopefully finishing a ratchet.
Cool . You wouldn't want to drop anything , the parts are so small !
And a magnet won't work...good thing my wife has good eye sight!...bob (:
Another excellent video. Thanks for taking the time and trouble to impart your knowledge and experience. I appreciate it very much and really enjoy watching you at work.
Thanks Brian...I get a bit of a kick out of figuring out the best way to present the build...it's fun to cut the part...but it's fun too video it too...bob
Thanks for another great video.....learning a lot
Thanks for stopping by...bob
Can you make a video about the calculations involved in the design of the ratchet? Thanks
Awesome work👍 Thank You for sharing.
Thanks for stopping by...bob
@@robertt-cs8fe been here earlier will definitely come back later cause You do great videos
Robertt, Your videos are getting better and better with each one. I do have a couple questions. Love you showing what a carriage clock is for us "non" clock people.
1) You said there was an off set to make it work better. Why is that? Could you please explain? I'm thinking the hole is off set from the center line.
2) It didn't look like the lathe stock was setup for drilling the offset. Did you just skip that part of the video?
3) your microscopes look like they have some high quality lighting. Do you know the brand?
Answer to #1: Most ratchets on clocks are holding back the force of a powerful spring (very powerful with a fusee)...the offset cut locks the click much more securely then a radial cut...it creates an undercut (radial rake)...this ratchet I made was for an alarm setting arm so no real power...but it was still offset. The hole is not offset...you line up with the center of the hole then offset from there using a test indicator or just the handwheel...this ratchet did not have a collar so you could offset to either side as the ratchet is reversible.#2...It was offset I used 0.0343" I believe...sorry that was not clearer but that is a small amount and may not have been clear from the camera position...but the final look around the teeth shows the offset that was achieved.#3...They are LED rings...not that expensive nowadays...no name I can see...I think they are imports...they work well but I do use bottom lighting at times with the toolmakers microscope...the ratchet was flat...not all threads and the like are like that and some of my set ups are 3D so more creative lighting helps. The Nikon works well with the ring when looking through the eye pieces...but maybe not all that great with the video eye piece...it is not a real quality video eye piece..an import I was messing about with. I have another stereo microscope on my watchmakers lathe (not shown in video) and I use 2 halogen goose-neck lamps...usually one on either side to get rid of shadows...I use it with the Nikon at times as well. I'm getting older and good lighting is essential.
Very small. Is that the smallest gear you have made? Nice work Bob.
Definitely the smallest ratchet...watch gears are a bit smaller...thanks for stopping by...bob
@@robertt-cs8fe I meant both ratchets and gears. I always enjoy stopping in, always learning.
I need a 5/32 mm ratch open or gear
Bob, how do you sharpen your broaches? There got to a better method than just using a stone.
Hi Craig...I use stones as a finishing step...if you wish to cut a polished surface you must use a polished cutting edge...I use the India and Hard Arkansas on gravers mostly...and to polish lathe bits...I used the stones on the ratchet as it was very close to the finished thickness and it cuts very smoothly and I needed to remove the effects of the parting off blade. Broaches I do not sharpen as a rule... a 10 broach set is about $15-20...and bigger broaches I make myself...anything that is hardened I use a stone on...of course the stone could be on my surface grinder...which I do use on the bigger broaches I make...the broaches I used in this video are cutting broaches...I also use finishing broaches...and I use blue steel rods to make 3 sided broaches as well...there could very well be other ways...I kinda stick with stuff that works for me...did ya like the video?...bob
Muito bom ! Perfeito.
muito obrigado...bob