Darn right its useful! I just clamped down a fixture I had (a Shopsmith planer blade sharpening fixture), inserted my 13 inch DeWalt planer blades and skimmed them nice and sharp using a Dremel diamond wheel in my 1/8 Makita collet. I skimmed them using the screen .5mm button on the Z axis. I was careful to skim several passes before dropping another .5mm. When all nicks were cleaned up on both sides of all 3 blades I installed them back in the planer. Planes like new now. Be sure to mark the blade sides 1 and 2 and skim them to the same depth. Side 2 does not have to match side 1 if it needs more or less depth. Just keep all side 1’s the same and all side 2’s the same. Now that’s a way to save some money!
I am going to try some 1/4 inch shank wheels which I think will work even better.
On top you have two long horizontal buttons. Hold the left one while pushing left or right on the top left joy stick and your router will run along the x axis without wavering. Hold down on the right button while pushing the same joystick up or down and the router will travel along the y axis without wavering.
This was SUPER helpful! Thanks for posting this. I’m BRAND new to CNC and just got my Onefinity set up yesterday. Was trying to figure out what all the controls did. Thanks again!!