Reversable Hold-Down for T-Slot Tables

by WorksBySolo, published

Reversable Hold-Down for T-Slot Tables by WorksBySolo Apr 8, 2012
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UPDATE: NEW UPLOAD that has four clamps grouped together. These will fit on a 120mm x 120 mm build plate.

This is a reversable hold-down clamp used on work surfaces with t-slots. Use with thin work pieces one way, or flip around to fit thicker stock. This is based on a collection of different clamps I've seen while browsing woodworking tool retailers.


The way the original file is oriented, it just barely fits on my TOM. Feel free to test another angle or gang more together.

I printed mine with 3 shells and 50% fill. They seem to be holding up good so far. This is designed to work with 1/4" - 20 bolts. 3" long works well, but use whatever length fits your situation.

The knobs in the pictures are store bought (already had them). I plan on designing a printable knob with nut-trap in the future.

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What are these rails called where where your t nuts sit in? And where can I buy them?

T-Track, T-Rail or T-Slot depending on the manufacturer. Amazon or most woodworking places.

good job, i have used it , don't need buy anymore,thanks

Comments deleted.

Any progress on the printable thumbwheels with nut traps? I may design those if nobody can find any. Seems like a pretty commonly useful item.

Here is a parameterized one. Believe it could be made to fit 1/4in http://www.thingiverse.com/thing:41382

Parametric Thumbwheel with spacer
by Banjer

This bit can cut those t slots right into your spoil board! Stoked! This is going to work perfectly for me. Thanks for uploading. http://www.amazon.com/Yonico-14190q-T-Slot-Cutter-Router/dp/B00KZM1RH8/ref=sr_1_1?ie=UTF8&qid=1464048922&sr=8-1&keywords=t+slot+bit+1%2F4in+bolt

You might consider linking the bit in your description, since people might wonder about how to make a t slot like that.

This is pretty big for what I do, so I'm printing a 65% version for a 3" length.

nice, i made some just like this for my cnc and they tend to crack on the bottom side where directly under the bolt. I think if the bottom side was a smooth curve it would be much stronger. I also printed mine nearly solid and they are extremely strong. you can also make printable knobs fairly easily.