Introduction: Safety Straightedge for Razor Knife Cutting

Picture of Safety Straightedge for Razor Knife Cutting
Ok... how many of you have cut yourself attempting to cut something other than your fingers when your knife slips and you find more than a Band-Aid is needed?

There are some of these safe cutting straightedges on the market but they cost as much as $60 for one very similar to the one we are going to make here. I have had these safety straightedges way before they went to market, as I have been doing this type of work for over 30 years.

You will be able to make one of these for under ten bucks with plenty of materials left over for more projects we will be making.

Materials you need:

An aluminum yard stick (you might look for one wider than the one in the demo here, but it works)
A piece of aluminum angle (1/2 X 1/2 X 1/16 thick)
Some heavy duty carpet tape
A piece of rubberized tool box liner

Tools you need:

Hack saw
Small miter box (or big one if you have it)
Utility knife

End view of finished safety straightedge:


jon_chalk (author)2014-04-01

Very good idea. I too have been a victim of the dreded rasor cuts. That has stopped since I added the safety straightedge.

gserrano701 (author)2011-02-09

I've seen far too many accidents in fingers with knives that your instructable would have prevented. Thanks, I'll make my own and one for my son this weekend.

rimar2000 (author)2011-02-08

If you put captions, we non anglophone could read them. I can read English, but I don't understand heard.

knife141 (author)2011-02-07

Great idea. I watched a leather worker run a razor knife down a hide, across his straight edge, and then deeply across four fingers as he talked to a customer. It still makes me cringe when I think about it. Your safety straightedge is an excellent idea.

aeray (author)2011-02-07

Excellent idea. After cutting off the edges of my thumb and index finger a few times, I learned to keep them out of the way. It was a painful and bloody learning curve though.

OhMike (author)aeray2011-02-07

I hear ya! :-)

About This Instructable




Bio: I MUST APOLOGIZE TO EVERYONE... My wife retired from the state of Ohio a few years ago. I have been without a finished shop because ... More »
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