Rex Krueger patreon

A (purely informational) picture of the Plastic Vise

🕑 Added 2020-11-09 14:04:17 +0000 UTC

Comments

Forrest Beal

I have restored hand planes for friends for free. Their neighbors saw the work and had me do some for them. I have received many planes for free as gifts for doing this. A lot of the older woodworkers in my area retired and their tools rusting. Their children have no interest and they figure they would give their tools to someone who appreciates and would use them.

Joseph Lorentzen

I think I would use some bench dogs, a couple of boards and some wedges.

ZeroCatOrder

I started to work on these parts. I found a couple of others that I'll check out and remix into one. https://www.thingiverse.com/thing:4713990. The patent shows a bunch of other parts. a 45, a small stop, screw clamp. I'm also going to include adapters for 13mm and 19mm(3/4).

ZeroCatOrder

There are patents for EVERYTHING.

Brian Schwarz

I've been playing around with 3d printing dog hole accessories for my new bench - any possibility you're open to sharing the STL files for this?

Tater Schuld

did, see below

Tater Schuld

3d printer matching 19mm(3/4) benchdog technology gets you this https://imgur.com/gallery/s5SONYu I think I prefer my homemade moxon, but the concept is very valid

Denise Skidmore

https://patents.google.com/patent/US4157819A/en

Denise Skidmore

Plastic parts often have the pattent number stamped right on them. Do we have that?

Denise Skidmore

There are plenty of non patented cam designs, and it might make more sense to design your wooden version based on normal bench dog holes that also work for other types of clamping. The dropped pins on the flat side could be actual bench dogs.

Todd Maurer

Expired patent. 3d printer?

Michael Bennett

FYI, Marius Hornberger also came up with a cam clamp system that he uses to hold down things of his CNC. https://youtu.be/O-rqf4uSXRE

Michael Ross

Thanks for the pic. I see where you can use a box end, or socket wrench to crank the locks. That is a nice idea, harder to implement a hex in a wooden replica, but maybe it is worth thinking about how to do that in wood.

Knathaniel C

So... When we gon make some from scrap plywood?

David Roberts

This looks like something that one could easily fabricate for personal use from some quality plywood and hardwood dowels... Just saying.

Sean McGown

Case in point: https://www.woodmagazine.com/tool-reviews/clamps-clamping/clamping-with-wedges

Sean McGown

There are MANY old books from the 40s and 50s with illustrations of using wedges and posts to clamp work.

Adrian Abshire

I like those UJK clamps - very cool - thanks for sharing that!

William Denny

Check out this from Ax Minister in the UK. https://www.axminstertools.com/us/ujk-technology-cam-wedge-clamping-set-105369

Bill Brisky

Rex, when you came across this hair brained (pun intended) idea for a video, what percentage of your thoughts were telling you to ditch it and find something, anything else? Maybe next week you can find something sponsored by Mr. Ron Popiel? Maybe Ronco did an all-n-one dovetail jig/vacuum cleaner. Honestly, surface clamping is an issue. I have a (read: one) Bench Dog. It works great, however, I'm working on some slightly cupped 5' slabs and I've had to be rather creative to hold them down. Something like this, or at least something that solves the same problem would be awesome. It has me thinking.

Joseph Scone

The patent office has the patent (US4157819A) as expired. I did not see a renewal or adaptation from the 1977 original. You are probably good. (insert legal disclaimer here)

carlo pieracci

what about building something similar in wood? If cams are too hard to build we could use wedges and a simple stop..

Matt Mohon

Hey Rex....how bout a poor man's diy version that uses existing 3/4 inch dog holes?

The Poor Man

This will be very helpful. I was planning on using some basic drawing program on my wife's computer to make a template of sorts to print out and glue to some half inch or so thick oak pallet wood and go from there, but this will save me a little time.

Michael Grundy

The patent is from 1979 https://patents.google.com/patent/US4157819A/ , so it expired in 1997. There are some nice details in the drawings, this is one of those patents that looks like it does a good job of laying out the invention. Also, the Critt-Vise trademark ran out in 2008 https://trademark.trademarkia.com/crittvise-73625280.html so it's probably safe to use as a generic. I am not a lawyer, this isn't legal advice :-P