Sacrificial drilling fixture out of OSB and a 2by4

8 Attachment(s)

I find the best way for me to cut holes in thin materials is to clamp them between 2 pieces of wood as a sacrificial drilling fixture
Attachment 42493
In this case I need to drill 2 sized holes in the brass shim stock
First the small hole
Attachment 42494
then the large hole and drill through the stock to create the part
Attachment 42495
Since I needed multiples of what I was making in 2 sizes after making the large diameter shims
I changed the 3 1/2" hole saw out for a 2 1/8" so I could make 2" shims
Attachment 42496
Attachment 42497
Now drilling up from the bottom the 2/4 becomes the guide for the 3/4" hole saw
Attachment 42498
I then finish off by using the 3/4" hole in the shim and the 2x4 as the guide for the 2 1/8" hole saw
Attachment 42499
Large & small brass shims plus a bunch of 1/4" brass washers as an added benefit, with a couple of OSB disks thrown in for good measure
Attachment 42500

Thanks Frank S! We've added your Sacrificial Drilling Fixture to our Drilling and Drill Presses category,
as well as to your builder page: Frank S's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-sacrificial-drilling-fixture"> <img src="/uploads/254494/homemade-sacrificial-drilling-fixture.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-sacrificial-drilling-fixture">Sacrificial Drilling Fixture</a> <span> by <a href="https://www.homemadetools.net/builder/Frank+S">Frank S</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/drilling'>drilling</a>, <a href='https://www.homemadetools.net/tag/fixture'>fixture</a> </div> </div> </div> </div>

A simple yet elegant solution. It’s gotta be Frank S.