Hello, dear readers and homemade products!
A huge number of devices and holders for sandpaper have been invented for manual grinding. Purchased designs often have significant drawbacks – sandpaper does not stretch well, and it is difficult to replace.
In this article, the author of YouTube channel “JSK-koubou” will tell you how he made a sanding block with a simple system of automatic sandpaper tensioning.
This homemade product is very easy to make, and you can even make it in your home workshop.
Materials needed for DIY.
– Brass furniture hinges-invisible (barrel)
– Round neodymium magnets
– Sheet plywood, double-sided tape, sandpaper
– Two-component epoxy adhesive.
Tools used by the author.
– Hand circular saw
– Guide for circular saw
– Drilling machine or screwdriver
– Jig for dowel holes
– Wood drills
– Square, metal ruler, pencil, mallet, knife.
Manufacturing process.
So, thick sheet plywood will serve as the main material for this homemade product. The master cuts out two identical rectangular blanks from it. He does this on a homemade vertical circular machine.
The first blanks are glued to the workbench using double-sided tape. From above (parallel to the long edge of the part), also on the tape, the guide for the circular saw is pressed. The second workpiece plays the role of a lining so that the guide does not warp.
The production of such guides has already been described in several Articles .
Circular saw blade hand-held circular saw is installed at an angle of 45 degrees. The overhang of the saw blade must be made small, and a slot must be made in the part. The guide is removed, the double-sided tape is removed.
A similar operation can be performed with an ordinary hacksaw.
Switching to a drilling machine (you can get by with a screwdriver with a jig for dowel holes ), the author drills two blind mounting holes for countersunk loops near the edge opposite the groove.
Closer to the groove, two recesses are drilled to install neodymium magnets.
These pairs of holes must be symmetrical on both blanks.
Now you need to carefully press brass invisible hinges into the first detail, observing the correct angle of rotation.
The second half of the gadget makes a little profit on the hinges.
Having opened the halves of the holder, the author drives in the loops to the end.
Now you need to glue round neodymium magnets
onto epoxy glue in the places prepared for them so that they are located with opposite poles to each other.
As a result, the “booklet” snaps into place when closing, and the magnets hold strong enough.
It remains to cut off a strip of sandpaper of the desired length.
Having opened the device, the author refills the edges of the sandpaper into the grooves.
If the length of the paper is selected correctly (this is done experimentally, and the appropriate length is recorded on the device), then the book will slam shut, automatically pulling the sandpaper.
As you can see, this sanding block has four working surfaces. If desired, you can modify the design by rounding the outer corners.
Replacing worn-out sanding paper or changing to a different grain size is done very quickly. You don't need to twist any screws.
Thank the author for a simple but useful grinding device.
Good mood, good health, and interesting ideas to everyone!
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Author's video can be viewed here.
