LumberJocks

Need to find a knurled tapped thumbwheel to make anti-rack device for vise?

  • Advertise with us

« back to Hand Tools forum

Forum topic by ElChe posted 11-22-2015 05:46 AM 1404 views 0 times favorited 21 replies Add to Favorites Watch
View ElChe's profile

ElChe

630 posts in 803 days


11-22-2015 05:46 AM

Topic tags/keywords: vise anti-racking thumbwheel question bench

The Diefenbach benches came with a nifty thumbwheel on each vise that resided in a forstnered hole on the vise. You could then spin it tight against the bench to prevent racking. I can’t find a big enough thumbwheel for this purpose. I’m thinking knurled thumbwheel 2” outer diameter and tapped for 1/4” or 5/8” all thread? I can’t find a picture of the device on Google but I saw it in one of the workbench books. I currently use a shopmade one similar to the one Lee Valley sells. I’d like to have the anti-racking function integrated into my bench vises. Any ideas? My Google fu has failed me and local machinists won’t touch the project. Thx!

-- Tom - Measure twice cut once. Then measure again. Curse. Fudge.


21 replies so far

View JoeinGa's profile

JoeinGa

7487 posts in 1474 days


#1 posted 11-22-2015 06:31 PM

Are you talking something like this? I may have a couple if you can use ‘em
.
.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

View DrTebi's profile

DrTebi

256 posts in 2733 days


#2 posted 11-22-2015 07:11 PM

McMaster has a great selection of knobs, try their site here:
http://www.mcmaster.com/#machine-component-knobs/=zx9ksd

I have bought a few there already, and they were all great. I especially like the “Steel Four-Arm Knob” style and the “Comfort-Grip Polypropylene 4-Arm Knob”.

Not sure if they have 2” ones though, that seems quite large for a 1/4”-20 knob.

View bondogaposis's profile

bondogaposis

4036 posts in 1818 days


#3 posted 11-22-2015 07:49 PM

View ElChe's profile

ElChe

630 posts in 803 days


#4 posted 11-22-2015 08:09 PM

It would be something like this but bigger.

A threaded rod is attached to the vise on one end and the rod passes through a hole the bench as you open or close the vise. When you have a board in the other end of the vise, To prevent racking you spin the thumb wheel on the rod on the other side of the vise until it contacts the bench. The thumb wheel prevents the side without the board from racking. Am I making any sense? Oh wait, I do have a picture! This is the diefenbach anti-racking device:

-- Tom - Measure twice cut once. Then measure again. Curse. Fudge.

View ElChe's profile

ElChe

630 posts in 803 days


#5 posted 11-22-2015 08:20 PM

Here it is.

-- Tom - Measure twice cut once. Then measure again. Curse. Fudge.

View MrUnix's profile (online now)

MrUnix

4241 posts in 1665 days


#6 posted 11-22-2015 08:24 PM

Get a piece of 1/4” aluminium, cut into a circle, drill and tap. You can go as fancy or as simple as you want.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View Kazooman's profile

Kazooman

628 posts in 1419 days


#7 posted 11-22-2015 08:31 PM

Geez…. I was so proud to have found the picture and was about to post it but ElChe beat me to the punch. Well done!

I agree with Brad, you should be able to make one of these yourself. Post a picture when you are done.

View bigblockyeti's profile

bigblockyeti

3668 posts in 1187 days


#8 posted 11-22-2015 09:12 PM

Wouldn’t the guide rods of a quality vice alone prevent this? Mine are 1.5” diameter and about 12” apart and I’ve never had this problem.

View ElChe's profile

ElChe

630 posts in 803 days


#9 posted 11-22-2015 09:18 PM

My vise racks despite being fairlynrobust. Hmm. I’m wondering if I could cut aluminum or steel flat stock with a bimetal holesaw on my drill press then tap the disc? Then how to do the knurling. I’m gonna give it a try m

-- Tom - Measure twice cut once. Then measure again. Curse. Fudge.

View WoodNSawdust's profile

WoodNSawdust

1417 posts in 643 days


#10 posted 11-22-2015 09:35 PM

After you cut the aluminum round and tapped the hole in it you could ask a local turner if they would knurl it with a knurling texturing tool.

-- "I love it when a plan comes together" John "Hannibal" Smith

View Kazooman's profile

Kazooman

628 posts in 1419 days


#11 posted 11-22-2015 09:54 PM

The threads in 1/4” aluminum might not be very robust. You could use a good diameter all thread rod and a steel nut. The nut could be epoxied to anything for the wheel. The nut would be taking the force from the vise, not the disc.

How is the rod attached to the front jaw of the vise? Can it be easily removed? If not it would limit the use of that end of the jaws.

View MrUnix's profile (online now)

MrUnix

4241 posts in 1665 days


#12 posted 11-22-2015 10:10 PM

The threads in 1/4” aluminum might not be very robust.

I don’t believe that would be much of a problem… there wont be a lot of force on them as it’s just there to keep the free side of the vice from being pushed back. As for the knurl, the ones pictured are not knurled… the score marks on the outer edge could easily be made using a metal file, dremel tool with a cut off wheel, hack saw, etc…

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View oltexasboy1's profile

oltexasboy1

240 posts in 1171 days


#13 posted 11-22-2015 10:24 PM

You can find a local machine shop that uses round bar stock and have them cut a piece the size and thickness you need and thread it yourself.

-- "The pursuit of perfection often yields excellence"

View DrTebi's profile

DrTebi

256 posts in 2733 days


#14 posted 11-23-2015 04:15 AM

“The Bay” often has what you thought you could not find anywhere else…

http://www.ebay.com/sch/Metals-Alloys-/29402/i.html?_from=R40&_nkw=aluminum+disc

Buying a disc of the right size and drilling and tapping it, is what I would do. Unless you want perfection, you could also knurl the edges yourself with a file and a bit of geometry…

View Andre's profile

Andre

1023 posts in 1273 days


#15 posted 11-23-2015 07:16 AM

Check Kiefers projects,I believe he made one for his Bench, think it was of the quick release type. Might have go take another look at it?
Found this link
http://lumberjocks.com/projects/98847

-- Lifting one end of the plank.

showing 1 through 15 of 21 replies

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com