|
|
|
Rotary Cutters |
Edge Angle
Wheels on Rotary Cutters are sharpened according to the angles shown below. The calculation of α is measured according to the drawing to the right.
Rotary cutter being held in 3D-printed jig
These are sharpened using the a jig which holds the blade securely whilst allowing it to be rotated when being sharpened on the grinding wheel.
These blades are usually quite hard, so a diamond grinding wheel is recommended. I have found that 1,200 grit (Tormek DE-250) works quite well.
|
To be creative is to let little pieces of your heart go and place them into each project you make. Pat Bravo |
These blades need to be honed. As outined in the video, 3D-printed Rotary Cutter Sharpening Jig, paper wheels work well. Experience has shown that 5 micron (µm) followed by 0.5 micron (µm) produces a very fine edge.
|
General Guidelines |
|
| α |
Notes |
|---|---|
| 30° |
This is a best estimate; it is best to match the existing edge if possible. |
The jig shown above is detailed on the jigs page, Rotary Knife Jig. It is mostly 3D printed so it can be made easily and inexpensively.
