Sanding Blocks 125mm and 150mm Sanding Disks

To complete my Mirka DEROS sander and don't have to take it out for small and quick jobs, I designed and 3D printed sanding blocks for the 125mm and 150mm sanding disks I use

Design

Design from Fusion 360 is quite simple. I started from the profile of the blocks and use “Revolution” feature

For the handle I reproduce more or less the one from my Mirka sander

The diameter of the base is a little smaller than the pad one (-1mm). So when sanding corners there is no risk to damage the part with the block more the sanding pad will be easier to center

Both 125mm and 150mm blocks use same profile. Just diameter of the bottom surface changes

Printing instructions

Printed in PLA Prusament Pineapple Yellow and Jet Black to look like Mirka colors (Yellow and Black)

I used “Fuzzy Skin” feature from PursaSlicer on the black part to have more grip on the handle

It's sliced using PrusaSlicer using

• 0,20mm layer height
• 3 perimeters
• 10% infill / Gyroid
• Color change M600 (from Yellow to Black) at 30mm height
• Fuzzy Skin activated at 30mm height (Synchronized with color change)
• Printing time 6H48 for the 125mm and 8H13 for the 150mm

It can be printed faster with 0,25mm layer height. But the surface will be less smooth, mainly for the top of the handle

You can use “Variable layer height” option from PrusaSlicer, that I didn't used for this model

Material

Best way is to don't stick directly sanding disk to the block. Better to use interface, so sanding disk can be changed easily from the blocks

1st option: Use protective pads like the ones used with the orbital sander. Stick it to the block using double side adhesive. Sanding disk can be easily changed. That's the one I used 

2nd option: Use of self adhesive hook and loop tapes you can find easily from internet to attache directly sanding disks. Stick only the Hook on the block

On top of .stl and .3mf files, I uploaded Fusion 360 .f3d file so you can modify the design and adapt it to your needs

As usual, feedback and comments (and for sure "likes") will be always welcome. Feel free to post nice pictures of your makes

You can also look at other Mirka DEROS accessories I designed and 3D printed

• Mirka DEROS vacuum hose connector 
• Mirka DEROS Orbital Sander Handler for Systainer

Enjoy

If you like this model, take a look also at my other designs