Sand paper sizer

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Project by TechTeacher04 posted 12-27-2015 01:33 AM 3035 views 13 times favorited 6 comments Add to Favorites Watch

This has become an indispensable tool in my classroom. It consists of a piece of plywood, 2 plywood stops and 2 hacksaw blades. You insert a full sheet of sandpaper and tear it in half, then take each half and tear it into quarters. It makes sizing sandpaper for 1/4 sheet sanders quick and painless. When using this jig it works best to press down on the hack saw blade when you tear, the paper has a tendency to slide and tear at a slight diagonal if you don’t.


I plan to switch out the hacksaw blades for old blades from my DW735 planer, they are a waste item and would not flex when tearing paper against them like the hacksaw blades do.

6 comments so far

View sawdustdad's profile


379 posts in 1395 days

#1 posted 12-27-2015 01:37 AM

That’s so simple yet elegant. It’s ideas like this that make working in the shop easier. Thanks for posting!

-- Murphy's Carpentry Corollary #3: Half of all boards cut to a specific length will be too short.

View Tooch's profile


2012 posts in 2386 days

#2 posted 12-27-2015 04:07 AM

really cool project and I’ll bet it is very useful. It seems no matter how hard I try, the kids just don’t get the concept of a how to get 1/4 sheet by tearing in half. Maybe this will help

-- "Well, the world needs ditch-diggers too..." - Judge Smails

View Gregg M.'s profile

Gregg M.

215 posts in 2192 days

#3 posted 12-27-2015 04:54 PM

nice idea!

-- Marvel Woodworking, West Chester, PA -

View bushmaster's profile


3672 posts in 2792 days

#4 posted 12-27-2015 06:51 PM

One of these days I am going to have to break down and invest in one of these, I keep tearing the sheets on any edge I find around the shop and not always successful getting a whole sheet the right size or a usable sheet at all.

-- Brian - Hazelton, British Columbia

View Richard's profile


1927 posts in 3200 days

#5 posted 12-31-2015 04:48 PM

But why waste your time and effort in Making one of these when you can Buy one from Rockler $9.99 . :)

View TechTeacher04's profile


412 posts in 2041 days

#6 posted 01-04-2016 12:25 PM

The Rockler one is variable with no positive stops ensure 1/4 sheet size. I made mine for my high school classes, they could easily screw up if using the rockler made one.

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