You need
For Channel:
4x magnets 8mm x 2mm
For Holder “countersunk screw”-Version:
2x M3 countersunk screw x 9-10mm (total)
For Holder “cheese head screw”-Version:
2x M3 cheese head screw x 9-10mm (total)
The head must be a maximum of 2 mm high.
For Holder “adhesive tape”-Version:
Double-sided adhesive tape
https://a.aliexpress.com/_EHfZmNJ
If you are interested in creating a remix, please contact me for the raw file.