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Keyboard Stand Cement Casted

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Keyboard Stand. 3d print mold that can be filled with cement to make a solid keyboard stand

Updated at source: Feb 22, 2026

Model information

Wanted a heavy solid keyboard stand that was my own...

3d Print mold (recommend PLA since it will break apart easier)
Post processing print clean up
Add cooking oil lightly to the inside of the mold, helps release the cement
Pour cement
1. Used Cement-All available at big box home stores
2. Vibrate/Tap mold or table for a couple of minutes to reduce air bubbles
Let dry for 4ish hours
Remove mold
Sand by hand to remove print artifacts (220 grit, 320 grit)
Add rubber feet and some padding (rubber, cork etc.) where the keyboard goes
To turn cement black
1. let the cement cure for entirely (7-28 days)
2. mix one bottle of 1/2 bottle Rit Dye mixed with water wait 90+ minutes let dry
3. Post drying completely again add some kind of sealant

Do not go too intense post processing the mold sanding will remove the print lines (sanding the seam near the base is recommended though )
Cement mix should be slightly looser than pancake batter
To break the mold use a soldering iron or hot air staging (preferably outside because it will release some nasty fumes). Breaking the outer shell first by hand worked well for me
Printing go with one wall so the mold in not too strong if it needs to be broken up