Model Engine Maker

Supporting => Tooling & Machines => Topic started by: Coopertje on December 04, 2014, 08:44:48 PM

Title: Quick and dirty chuck stop
Post by: Coopertje on December 04, 2014, 08:44:48 PM: Tonight I have put together a lathe chuck stop. Took me a little over 1 hour, do not understand why I waited years to make something so useful. Thought to share it here, maybe it can be useful for others….or not….

My Harrison lathe has a MK4.5 taper in its spindle nose. I happen to have 2 sleeves MK4.5 to MK3 taper. Took the worst of both and reduced it such that it just a little out of the lathe spindle nose

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop1.jpg)

Have some old machinable MK3 adaptor

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop2.jpg)

and cleaned it up in the lathe with some emery paper (I always cover the ways when using emery paper)

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop3.jpg)

Mounted it in the adaptor sleeve and marked the length

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop4.jpg)

Cut to size with the bandsaw

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop5.jpg)

Drill and tap M8 for about 30mm deep

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop6.jpg)

Turned down a piece of steel of 12mm to 8mm and treaded it M8

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop7.jpg)

The other side I turned down to 7.5mm (the crank taps for my V8 engine will be 8mm) and made a spare one for future use. Below it is mounted in the spindle nose

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop8.jpg)

And a view with the chuck mounted

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop9.jpg)

Finally a family shot of the parts

(http://i1180.photobucket.com/albums/x410/coopertje75/Lathe%20chuck%20stop/Chuckstop10.jpg)

I know there are much better and more versatile design but for me this will do and the goal was to make something quick!

Regards Jeroen
Title: Re: Quick and dirty chuck stop
Post by: moerman on December 05, 2014, 09:26:15 AM: Well done Jeroen! Definitely something I should make in the near future.

Wout
Title: Re: Quick and dirty chuck stop
Post by: Coopertje on December 05, 2014, 11:50:25 AM: Thank you Wout, I am sure that you will not regret making one!

Regards Jeroen
Title: Re: Quick and dirty chuck stop
Post by: Hugh Currin on December 05, 2014, 06:15:16 PM: Jeroen:

Nice work and certainly solves the problem.

Will a 5C collet fit inside a MT4.5? My lathe has a MT5 in the spindle and I was able to make a MT5 to 5C adaptor. Add a draw tube to tighten the collet and its ready to go.

(http://www.currin.us/MEM/Shop/5C-1.jpg) (http://www.currin.us/MEM/Shop/5C-2.jpg)

I've found it incredibly useful. I even found it can stay in place with a 3 or 4 jaw in place, so it can be used for a chuck stop also.

Thanks for the write up.

Hugh
Title: Re: Quick and dirty chuck stop
Post by: Coopertje on December 06, 2014, 06:46:11 PM: Thank you hugh. Nice solution you have on your lathe. I have a adaptor from MT5 to 5C, kept it when I sold my previous lathe. I am planning to make a Camlock-3 disk with a MT5 taper and put the C5 Adapter inside. I would like to be able to remove it quickly since many times I have some stock inside the spindle noise. Hope I win the Christmas lottery, then I can quit working and finally finish all the projects from my wish list!

Thanks for showing your solution, I like it!

Regards Jeroen