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Customizable Sanding Stick

by mightynozzle, published

Customizable Sanding Stick by mightynozzle Jun 26, 2017
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10447Views 2342Downloads Found in Hand Tools

Summary

I like the idea of the Sanding stick by workshopbob, but I don't want to buy some hex screws. So I've created this thing, where you can customize your sanding stick, that will automatically include the needed printable screws.

Customizable Settings:

  • set the length, height and width (picture 3)
  • 3 different end styles: none, round and wedge (picture 4)
  • set the angle and a smooth round end for wedge style

I have also added the four sticks I'm using in the first picture as .stl files.


Do you like my things and do you want to support me? You can use these links if you want to buy something, like the filament I used for this thing or the new kit on the block - the Creality CR-10 (Coupon DYEY). Thanks!

Gearbest: https://goo.gl/xXeJr5
Aliexpress: https://goo.gl/UWYJY8
Banggood: https://goo.gl/AHHSrq


Thanks to RCLifeOn for this little Review: https://www.youtube.com/watch?v=eK8k_6zu0hs

Print Settings

Printer:

Anet A8

Rafts:

No

Supports:

No

Resolution:

0.2 or better

Infill:

50%


Notes:

You can use lower infill, as long as the infill is present in each layer of the screw. Or you can use separate infill settings for each part e.g. 50% for bottom part and screws, 25% for top part. You can easily separate the part in Simplify3D under Mesh -> Separate Connected Surfaces. You can also separate the parts in the customizer.

Post-Printing

Step 1

Cut a strip of a sheet of sanding paper in the width of the stick. The length should be about the hole around the stick to the second hole + a little extra length.

Step 2

Wrap the strip around the stick from the edge of the first hole beginning to the edge of the second hole. You may cut the length in this step. You can either use your fingers or the top part to hold the strip in place.

Step 3

Screw the first screw in. Then you can tension the strip, lift the top part a bit and push the end of the strip between the top and bottom part. Use the second screw now.
Optional: You can use pliers to tighten the screws, but don't overtighten it!

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3 days ago - Modified 3 days ago

Very useful design. I printed a customized version and it works well for me (PLA, 0.2mm, flashforge creator pro). Some feedback for the default parameters:

  1. Screws are too loose. I had to reduce the tolerance to 0.3mm.
  2. Increase the length of the thread for stronger fastening. Having to screw a few more turns is not really an issue.
  3. Have longer screw heads, As they are now, they are too low and hard to tighten.

Also, one of the issues with this design is determining the length of sandpaper to cut. There is not much margin between too long and too short. Would be nice if the design would also help determining the necessary cutting dimensions. E.g. add an additional part, a rectangle of the proper sandpaper dimensions and also have the dimensions embedded in it as text. Some can print and use as a template while others will just write down the dimensions.

Again, very useful model. Thanks for sharing it.

Edit: or just add text at the top of the base with the recommended sandpaper length.

2 days ago - Modified 2 days ago
mightynozzle - in reply to zapta

Thank you for your constructive suggestions! I will consider this points in the next update in the next 1-2 weeks.

It also helped me making the base_top part slightly longer, by 3mm or so. This way it stretches the sandpaper better and holds in place while I insert the screws. You may want to consider adding customizable control of that gap. I used this code change (notice the x const)

x = 3;
difference() {
    translate([-x/2, 0, 0])
    #rotate([90, 0, 0]) {
        linear_extrude(height = width) {
            offset(r= + height * 0.3, $fn = 32) {
                offset(delta =  - height * 0.3) {
                    #square([length+x, height]);
                }
            }
        }
    }
Jul 3, 2017 - Modified Jul 3, 2017

Printed these out but the holes are too big for the screws. They just slot in with no turning. I was printing at 0.2 but I can't see much difference to higher layer settings.

Did you print it in ABS? The good news is, that you can print wider screws easily. In the customizer, there is a screw-setting section, where you have to adjust the screw thread diameter to about 6.3-6.6mm instead of 6.0mm. Did you print a customized stick or one of the 4 default .stl-files?

I used primvalue pla but I read it had some shrinkage issues. I used the stock stl files but have some success with isolating the screws and scaling them 110% on x and y.

Nice idea but the design seems to waste a lot of sand paper especially for the long ones.

Jul 3, 2017 - Modified Jul 3, 2017
mightynozzle - in reply to SimonSKL

You can also use the Customizer, to reduce the size of the stick. Or you can reuse the stripe for a smaller stick or use the stripe standalone.

Actually i found that it saves sanding paper, if you turn it once.

congratulations, RCLifeOn featured this in his most recent video https://www.youtube.com/watch?v=eK8k_6zu0hs

Thanks Bastian, this is nice! I saw it yesterday zapping throw the Youtube recommendations.

Works well, excellent idea.

Thanks for your feedback!

Jun 26, 2017 - Modified Jun 26, 2017

Did you watch 3D Printing Nerd Joel? I got the same iedea from their sandingstick video, but you did it soooo nice, theres no need for me to try :-)

Going to print it right now.

Jun 26, 2017 - Modified Jun 26, 2017
mightynozzle - in reply to FamousK

Funny thing. I watched it now, but they didn't make it in OpenSCAD. I only saw the sanding stick on the first page of the hand tools and I needed some for my balsa sail plane. Please post a picture of your make and if you have trouble during assembly, leave a comment, because I don't know if the settings around the screw and screw hole fits on other printer settings.
Schöne Grüße aus Künzell ;-)

Künzell bei Fulda?

Fulda ist ein Dorf^^

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