Because i bought a set of some different blades but just one handle, i made my own handles.
Print
Chip
The 2 halfs are mirrored. Print both without support.
Additional Parts
A deburring tool blade (e.g. BS1010, BS1018, BS1012, BK3010, …)
2 * zip ties (cable ties) width ~2.5mm (head width max. 5mm)
Assemble
Use the chip to join both handle parts aligned.
Insert a blade.
Wrap the ties around. The blade should rotate easy. If there is to much friction, clean the half pipes from print-leavings and don't pull the front tie to tight.