Draw plate for SQUARE holes

[allanyed]

After a long search on the internet I still have not been able to find a draw plate for square holes smaller than 0.5mm.  I am searching for a decent quality plate that will draw down to 0.20mm or smaller.

 

If anyone has a lead on where to purchase one I would really appreciate any information that you  can share.

 

Thanks in advance

 

Allan

[Bob Cleek]

Contenti has one as small as 0.3mm, but that's the smallest I could find searching my database of the "usual suspects." See:  https://contenti.com/square-drawplates-10625#_

[allanyed]

Thanks Bob, very much appreciated.  That is about 3/4" at 1:64 so should work.

Allan

Edited March 14, 2022 by allanyed

[druxey]

These draw plates are designed for pulling metal only. They will not work well for other materials such as wood!

[Bob Cleek]

2 hours ago, druxey said:

These draw plates are designed for pulling metal only. They will not work well for other materials such as wood!

Wire drawplate holes are actually "funnel shaped." The wire is inserted in the larger side of the hole and drawn through the narrower side of the hole, thereby stretching and compressing the wire to the smaller dimension as it's drawn through. (This is why the wire ends up longer than it was before drawing.) Wooden drawplates shave the wood off the piece with their sharp edges, so, if one is using a metal drawplate, the wood is inserted in the small side of the hole and drawn out the large side of the hole so the sharp edges of the small side shave off the wood to the desired dimension. If one wants to use a wire drawplate for wood shaping, it's advisable to lap the face of the "narrow side" so that the edges are sharpened.  (Making your own draw plate for round wood pieces is a simple matter of drilling the desired size hole in a metal plate and lapping the face of the plate.)