I had a successful day of 'forging, then decided it was time to clean, including a lens removal. Afterwards, I did a quick demo cut for a guest (on PG Medium Maple) and it didn’t cut through. Even two passes didn’t quite do the trick (lots of smoke, wimpy cut).
- verified the crumb tray is properly seated
- re-checked both windows
- re-checked the lens
- checked the hidden mirror
All optics are clean. I also found that changing the focus fixes the cut. Here’s an example job, run around 9:22pm cst, on PG Medium Draftboard:
I positioned the shapes near the center, setting one to PG CUT (the right-side-up T) and then manually adjusting the focus on the second to 0.00" (the inverted T). Here’s post-cut from the front. Note the finer cut line on the inverted T:
Here’s the back with the coating peeled:
Any ideas why my focus is off?