Introduction: How to Make a Mini Retractable Metal Saw

I show how to make a small retractable metal saw out of a box cutter and a hacksaw blade. It is very easy to make and requires fairly common materials and tools. It is more portable and convenient then a hacksaw but not as efficient. I used a fairly cheap box cutter so you should be able to get better results with a better quality one. This is a good tool to have when you need to be conservative of space. The hacksaw blade can of course be switched with other blades such as a wood cutting blade or even with some modification of a small file.

It is made by taking out the regular blade in a utility knife and cutting a hacksaw blade to the length of the original blade. The hole that would attach the hack saw blade to a saw is used to hold the blade in the box cutter like the original blade. Now you should be able to extend and retract the hack saw blade in the box cutter/utility knife.

The term "utility knife" includes small folding or retractable-blade knives suited for use in the modern workplace or in the construction industry.

Step 1: Materials

- Hacksaw Blade

- Box Cutter

- Pliers/Wire cutters

- Drill/Small Round file

Step 2: Watch the Video

(The video may not show up for mobile viewers)

https://youtu.be/LLhzreRLSRM

Comments

author
Travis p (author)2016-02-09

I just made it. If only the blades were wider.

author
Caleb Bennetts (author)2015-11-18

I honestly feel like this could become a commercial product. One change I would make for a commercial version, though, is to have the top of the blade a thicker tube for stability, possibly slightly bent down so it will even out when you push down on it.

author
DonParpan made it! (author)2014-11-07

I did it a bit different, I used a blade from a n electical sabre saw.

It's a really thight fit (I had to cut the tip of the cutter a bit) and Drilling the hole took ages...

But I think it was worth it

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author
olivergon (author)2014-10-28

A very small improvement would be to mount the blade to cut on pulling stroke instead on pushing stroke. This is the way the japanese saws are made and the cut is far more straight and easy to do.

I´m going to try it

author
pedrochulas.s (author)2014-10-27

muito bom

author
marshall.rowe.9 (author)2014-10-26

Video will not play on my Samsung S4, but great idea. Smart enough to figure out the "how-to-DIY".

author
Mihsin (author)2014-10-26

I went one step further and sharpened the other edge to use as a knife. It's still a good idea to make use of broken saw blades.

Thanks

author
JenertsA (author)2014-10-25

This is cool! Thanks!

author
dreiduke (author)2014-10-24

this idea.... cool

author
snoopindaweb (author)2014-10-24

Much more compact than those handles made for broken hacksaw blades. ~:-}

author
doubletap1911 (author)2014-10-23

Awesome idea!! I happen to have a busted hacksaw blade with one end still good and an old box cutter with a worn out blade. Now I know what to do with them.

author
gary.918 (author)2014-10-23

outstanding.and it gave me a good idea. keep up the good work

author
gcai_fwb (author)2014-10-23

good idea and a use for broken blades!

I have had a non-retractable handle that holds broken hacksaw blades (VERY useful!) but this is more compact and portable

author
Fikjast Scott (author)2014-10-22

This is great, nice idea and well done

author
agis68 (author)2014-10-22

cool thanks!

author
3366carlos (author)2014-10-22

very nice

author
Raitis (author)2014-10-22

I've always wondered how else could I mount one of those blades and this is brilliantly simple. Thanks!

author
RuudvandeLooij (author)2014-10-22

Great, I'll put this on my to do list straight away.

author
Fission Chips (author)2014-10-21

Crazy handy tool!

author
Mo0k (author)2014-10-21

Very useful, thanks for sharing!

author
warehouse32 (author)2014-10-21

very convenient, a great addition to any toolbox!

author
MattTheMaker (author)2014-10-21

Awesome! Next time I wear out the blade on a box cutter I'm making one of these.

author
ROD917 (author)2014-10-21

Time to make one of these.

author
M3G (author)2014-10-21

Cool idea!

author
diy_bloke (author)2014-10-21

neat

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