View Full Version : Hole locator/saddle square

Mark Baldwin III
01-31-2016, 11:45 PM
Making tools is fun for me. I always say it's fun to make things that make things. Now that I have a mill at my house, well...let's just say I'll never have a social life again :)

The frames for the machines I build for my day job are primarily made from 2" square tube. During the build process, I need to add a lot of holes in the tube. Sometimes for modifications, mostly for cable hangers for wires and air lines. The radius on the tubing makes locating a hole difficult with a standard square. Yesterday, I popped into work for a bit and had an idea. I cleared my calendar for this evening and set about making this saddle square. It provides two locations for marking the hole to be drilled: centerline, and 1/2" from the edge. Using a 1/4" transfer punch, I can just tap it in and start drilling.

A simple tool, but it should save me some time and frustration. Shown with a tubing cut-off for perspective.


Al Launier
02-01-2016, 9:12 AM
Simple, functional & work saving - what more could you want?

Mark Baldwin III
02-02-2016, 11:39 PM
Simple, functional & work saving - what more could you want?
My favorite kind of tools. I've used it quite a bit the last couple of days and I'm glad I made it.