lathe chuck face stop

[thehomeengineer]

Hi All
I thought i would post a method I use to get parts true and parallel which are normally to small a diameter or to thin to be pushed against the chuck face. The chuck back stop was used to help manufacture the spacers for my bead roller in the example below. I have also used these on the mill when using an indexing chuck or dividing head to position the work a the desired height.

The chuck back stops can be simply band sawed to shape from plate.



I have two aluminium chuck face stops that I can gang together or add spacers to achieve the desired distance from the chuck face.



Spacers fitted to one of the chuck face stops to achieve required distance from chuck face



Single stop with work piece ready to be machined. Note the stop simply fits against the chuck face and the work-piece is tapped back against the stop the chuck back stop is unable to leave the chuck while machining as it is not only trapped by the work but also the chuck jaws.



Thinner work-piece needing the stop to have spacers attached.



Both spacers ganged together. Note the spacers have been left in place but do not interfere with the tool position. In most cases these would be removed to prevent tooling clashing with the over hanging spacers.

I hope this will be of help to some and thank you for viewing
The Home Engineer

[Altair]

Thanks thehomeengineer! We've added your Chuck Back and Face Stops to our Lathe Accessories category,
as well as to your builder page: thehomeengineer's Homemade Tools. Your receipt:

Chuck Back and Face Stops by thehomeengineer

tags: chuck, stop

[Wmrra13]

Brilliant!

[Toolmaker51]

You just solved an engineering impasse for me.
I have occasion to need chuck stops. The collection at work is best described [not so] kindly as grisly. Horrendous fits even better. I appreciate the idea of an adjustable unit. There isn't any 'production' volume but the couple dozen this-or-thats are held to a reduced tolerance.
Following your pattern I'll tap 5mm to match space blocks, rather like screw on gauge blocks. Very handy little devils. The other arms will get a 5mm screw for height equalization, zeroed on surface plate and height gauge to the space block.
There is a commercial version of these with magnets on the 3 arms. Nothing I hate more than magnets on a locating device.

[Jon]

Congratulations thehomeengineer - your Chuck Back and Face Stops are the Homemade Tool of the Week!

Nice win on a busy week around here!

Some more good builds from this week:

Nut Spinning Method by rgsparber
Sanding Block by Spira Knives
Beam Clamps by Frank S
Chop Saw Stand by Tuomas
Expanding Anchor by rgsparber
Lathe Headstock Extender by Me2
Quick Action Vise by Kwandotechnic
Spreader Bar Extension by Frank S
Oscillating Spindle Sander by Mr.DK DIY
Disc Sander by sandho
Chainsaw Modifications by htavaresportugal
Welder Foot Pedal by Crusty
Sanding Bow by Michael Paley
C Clamp by Kwandotechnic
Rocket Hydraulic Press by jdurand
Sharpie Armor by Making Stuff
Offset Centering Tool by shopandmath
Crucible Tongs by SculptyWorks
Parting Off Blade Holder by xynudu
Welder Mobility Modification by Frank S
Miter Saw Laser Guide by Didpoolhall
Propane Forge by sandho
Bead Roller Dies by thehomeengineer
Kerfmaker by Christofix

thehomeengineer - you'll be receiving a $25 online gift card, in your choice of Amazon, PayPal, or bitcoin. Please PM me your current email address and gift card choice and I'll get it sent over right away.

More importantly, this is your 5th Homemade Tool of the Week win! I've just added the silver wrench-on-pedestal graphic to the awards showcase in your postbit, visible underneath your avatar.

Great job, and you're in excellent company joining these other 5-time winners: rgsparber, rossbotics, Christophe Mineau, Brendon, mklotz, Vyacheslav.Nevolya, brianhw, LMMasterMariner, Tuomas, olderdan, tonyfoale, and Stevohdee.

Here are all of your Homemade Tool of the Week winning tools. Congrats again

Claw Clamps by thehomeengineer

tags: clamp

Sheetmetal Former by thehomeengineer

tags: sheetmetal

Ring Roller by thehomeengineer

tags: ring roller

Axle Stands by thehomeengineer

tags: axle, stand, jack

Chuck Back and Face Stops by thehomeengineer

tags: chuck, stop

[Tuomas]

That also helps when you need to just straighten the ends from many similar parts.

This is a great tool. Thanks!
It will be useful at my workplace too.

[that_other_guy]

Great idea and execution.
Thanks for sharing it.

Brian

[Philip Davies]

Congratulations! I don’t understand what it’s for, but congratulations!

[Toolmaker51]

Well Mr Davies, I think homeengineer will agree, this suits primarily lathe work in a chuck, but could help when that chuck is bolted to a mill table etc.
When duplicate parts are needed, it is common to insert a stop inside the lathe spindle, providing they [required parts] of sufficient length to touch stop and protrude from chuck jaws.
Plenty of instances occur when said stop will not reach shorter pieces. The homeengineer's tool uses face of chuck instead to register so small items contact center of spider, which can have a extension [ie a screw] to reach farther yet.
There is point shorts will not chuck reliably parallel and need aligning by other means. Generally this is when they get shorter than equivalent diameter, "under-square" so to speak.