In this Instructable, I will show you how to make a magnetic bench-top miter box, which will help you achieve perfect 90 (or even 45) degree cuts with any hand saw. This tool can be mounted on any workbench, and should be mounted on EVERY workbench!


(Watch the YouTube video: LINK FOR MOBILE VIEWERS!)

I built this magnetic hand saw guide a few months ago, yet haven't been using it as much as I'd like to. It has a few main issues, which are:

  • Setting the correct angle is difficult, and not automatic like I'd like it to be. I need to adjust it to a 90 degree angle with a speed square, and when I tighten the clamp, it gets messed up. I rarely make a cut that isn't at 90 degrees, so that should be the default!
  • The teeth of the saw get stuck in the cloth towel thing sometimes.
  • The surface area between the magnet and the saw could be improved for better guidance.
  • It just doesn't fit my needs. If you're looking for a guide that's portable, can be made fairly quickly, and can cut at every possible angle, that one might be for you. For the first prototype, I wouldn't have expected more, though.

That got me thinking. I could make a guide that gets clamped with the piece of wood that I want to cut in my vise. That idea was actually pretty difficult, so I came up with a simpler, yet better idea: to not use my vise at all! In the past few months, I've been getting tired of setting up my vise every time before each use. To set up my vise, I need quite a few clamps which take time to install and remove since I sometimes need them for a different task (I don't own many clamps). I thought of making a quick release mount, but that's pretty difficult too, for several different reasons.

The guide I'm going to be making in the Instructable kills two birds with one stone ⁽ᵒᵘᶜʰ⁾ - not needing to install the vise before every cut, and improving the magnetic guide itself, drastically! Oh, and did I mention that the magnet will be hidden?

Let's get started!

Step 1: ​What You'll Need:

Below is a list of everything you'll need to complete this project. You should be able to find the parts in a hardware store, on eBay, or maybe outside, on the sidewalk that's near your house! If you don't see something that you think should be here, or would like to know more about a specific tool/part that I used, feel free to ask in the comments.

I made it for FREE since I already had /everything that was needed on hand.


Hardware, Materials & Consumables:



Subject/s: Woodworking, Making Your Own Tools

Approximate Time: <2 hours

Difficulty: Medium


<p>I would recommend gluing the magnets in the hole and then covering with some teflon tape. It'll be a lot slicker and you'll have a better hold on your saw. You could probably just drop down to a single magnet if you did that.</p>
<p>Teflon tape, the kind that's used for plumbing? Wouldn't that produce a lot of friction? These magnets are EXTREMELY strong, I wasn't able to separate them, no matter what I did. I'd probably still need some kind of spacer. I think that if the teeth of the saw touched the tape, I'd have to replace it again, and again, and again...</p><p>A few people commented on the first version that I should've carved a hole in the wood, but I think that what I did here is way better. It's a flat surface, and pulls the saw with just enough force so it doesn't move side to side, but doesn't hold onto it too tightly.</p><p>Very pleased with the final result. :)</p>
<p>Not that kind of teflon tape, I'm talking about this kind:</p><p>https://www.amazon.com/CS-Hyde-Conformable-Silicone-Adhesive/dp/B000REJN48/ref=sr_1_1?ie=UTF8&amp;qid=1490206883&amp;sr=8-1&amp;keywords=adhesive+backed+teflon+tape</p>
<p>Never heard of that before. Will keep it in mind for upcoming projects!</p>
<p>Something like the UHMW plastic that was used <a href="http://www.leevalley.com/en/Wood/page.aspx?p=51869&cat=1,42884,67754&ap=1"> here</a> should work well, but it costs $50! Why would someone pay so much for that!?</p><p><a href="https://www.coolcurtain.com/cutting-boards-mats/cutting-mat.jpg">These</a> cheap, thin plastic cutting boards might work well. I have to try them!</p>
<p>Wow amazing job. Voted! Definetely worthy for the homepage and i would say a contest winner...</p>
<p>Thanks! Good luck to you too with CUBEX!</p>
I need this in my life
<p>Make it!</p>

About This Instructable




Bio: 14 year old, sick with a deadly disease called DIY-itis!
More by Yonatan24:How to Make a Wooden Laptop Stand (Adjustable Angle) Handheld Dimmable LED Flashlight (from an Old Vacuum Cleaner!) Ultimate Woodworkers' Miter-Box (Magnetic Handsaw Guide V2.0) 
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