Rolling ball bump tool

[Mook]

I originally made mine as a bump tool that could be used to bump o/d's & faces true on a centre lathe. It was suggested that I try it as a burnishing tool so I gave it a go. I intend to make a video where it burnishes a complex form - if it works..

Burnishing video, sorry about the video quality & music.

Bump tool video, the ball is supported by much smaller ones in a spherical cup & can roll in any direction.

[Ralphxyz]

Usually I am bored with the detailed how I made it videos. But I'd like to see how you captured the ball.

[Mook]

Usually I am bored with the detailed how I made it videos. But I'd like to see how you captured the ball.

I used a ball transfer unit.

[DIYer]

Thanks Mook! We've added your Rolling Ball Bump Tool to our Lathe Accessories category,
as well as to your builder page: Mook's Homemade Tools. Your receipt:

Rolling Ball Bump Tool by Mook

tags: lathe

[flyfr8rs]

Could you please share the specific ball transfer unit that you used? I'd like to make a bump tool like yours, and I'm having trouble finding a ball transfer with that same or similar geometry - most have a much wider flange diameter and wouldn't work in this application.

[Mook]

Could you please share the specific ball transfer unit that you used? I'd like to make a bump tool like yours, and I'm having trouble finding a ball transfer with that same or similar geometry - most have a much wider flange diameter and wouldn't work in this application.

This is the unit I used.

https://www.bearingboys.co.uk/Heavy-...-Unit--47775-p

If you want the tool drawing I can upload it to get a shareable link.

[Jon]

Congratulations Mook - your Rolling Ball Bump Tool is the Homemade Tool of the Week!

We've seen many of these lathe bump tools before, but the rolling ball adds versatility, and the burnishing capability is another nice feature.

Some more good builds from this week:

Cross Slide Linear Ball Rail Conversion by tonyfoale
Fire Hose Roller by Cypriot90
Countersink Gauge by Mook
Tuyere and Ash Gate by Frank S
Wire Forming Tool by rgsparber
Ball Turner by albertq
Pipe Clamp by orioncons36
Holdfast by Philip Davies
Charge Air Cooler Pressure Test Cap by Frank S
Rewlestone Plumb Level by Philip Davies
Forge Hood by Frank S


Mook - you'll be receiving a $100 cash prize, in your choice of Amazon, PayPal, or bitcoin. Please PM me your current email address and prize choice and I'll get it sent over right away.

More importantly - this is your 3rd Homemade Tool of the Week win!

You join these other 3-Time Homemade Tool of the Week winners: rgsparber, rossbotics, mr95gst, Paul Jones, Christophe Mineau, Captainleeward, immortalx, scorch, Brendon, Frank S, morsa, mklotz, Philip Davies, Vyacheslav.Nevolya, brianhw, kess, LMMasterMariner, Don42, jjr2001, Tuomas, olderdan, tonyfoale, bobs409, dgbreggin, Mikhandmaker, thehomeengineer, old_toolmaker, celsoari, Bellevue Woodshop, Stevohdee, Dr.Al, Kovanca Polock, Dimitris Polychronis, warsztatOdZera, Kwandotechnic, Mark Presling, Crusty, winkys workshop, orioncons36, diy creative crafts, AB-SHOP, Occasional machinist, and My MiniCrafts.

You'll notice the 3-Time Homemade Tool of the Week award trophy graphic in your postbit beneath your avatar.



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

Forming Die by Mook

tags: punch, die

Mill Vise Inserts by Mook

tags: vise

Rolling Ball Bump Tool by Mook

tags: lathe

[flyfr8rs]

The tool drawing would be appreciated, thanks!

[Mook]

The tool drawing would be appreciated, thanks!

Here is a link to a .DWG file - https://drive.google.com/file/d/1xEM...usp=drive_link

[Mook]

Tried some pattern burnishing with the tool today on this years festive candlesticks.