PCB Machining Vise

by DangRenBuRang, published

PCB Machining Vise by DangRenBuRang Mar 19, 2013
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15548Views 2826Downloads Found in Machine Tools


This is a vise for fixing printed circuit boards (PCBs) on machine tables. it consists of two L-shaped pieces, which are meant to be clamped on two diagonally opposite corners of your PCB (see pictures). The long slots are made for M10 Hex Socket screws, for smaller ones you might have to use washers or modify the design.
The sides have a 0.75mm high wall built in, to enable accurate positioning of the Boards.
The short side of the L-shapes has two holes (22mm apart) , enabling you to screw on an additional plate to align one of the clamps with your machine table's edge.

Since I usually drill/cut my PCBs on my mill, I got a little fed up with using the thick clamping jaws usually used for fixing metal objects on the cross-slide. The small drills used for PCBs are so short that I had more than a few collisions with my drilling chuck and the jaws whenever I was drilling holes close to them, so I made this thing.
I intentionally left plenty of space under the clamp, so the drills won't directly go into your table.

Hope someone finds it useful.

DISCLAIMER: Use at your own risk.


I printed it in PLA with 0.25mm layer height, support and 100% infill, since I prefer my tools to be as stable as possible.

If you don't want to do it solid, I would recommend to use at least a few extra bottom/top layers as well as walls for good measure.

You need each part twice, if you want two units - for really big PCBs it might be good to use four.
I also added an arranged set with all the pieces for two units, which fits on a Huxley's 140x140mm² printbed.

For assembly you also need the following hardware:
(each unit)
--> 5pcs. M3x16mm screw (recommend hex screws, just didn't have any on hand - it will be easier fastening on a machine table if you can use a 90° Allen-key than a screwdriver, because the machine's spindle won't be in the way).
--> 5pcs. M3 nut. Slide those in the rectangular holes.

Additionally: If you want to add the extra part to be able to align the L with the edge of your machine table, you need 2 M3x16mm screws and nuts.

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Hey there. I really like your design. Should stiffen up the boards while reducing wasteboard use. I was wondering if I could have the CAD model so that I could modify the design for my own use. It's probably just going to be for my own use, but I would let you know and credit you if I reuploaded. Thanks.

This solves my problem. I'll make 2 today. thanks
Simon Shabtai Evan

Had a chance to test it yesterday, and it works as expected.