I can COMFIRM the bolt pattern works with the " F1 Ultra " but the outer tabs are longer and the protection cover hits them and doesn't close all the way airtight.. You could use it like that for the F1 Ultra but it would be like using the conveyor attachment and ur cover will be raised so employ proper protection... I ended up doing a 0.55" (14mm) boolean "negative" cut from each side with an added object of that size (.55/14mm) and than did a boolean merge to keep the curved ends in the print ... The result is the white printed ones mounted on my F1 Ultra in pictures... the black samples are the original print from here ... otherwise it's a great print ...

printed it while i wait for my glasses to get shipped ... I removed right away at the end of the print and while it was still hot gave the frame a slight bend at the nose bridge ... (some ppl said it was a bit too straight for the frames)

i actually removed the color layers and printed it all in white to make it a lithophane

had to reorganize the placement of parts for better support and plate adhesion

Quick and easy print ... didnt need supports .. It felt so safe I Actually printed from a waiting room over an hr away from the printer with Bambu Handy and watched it print ... got to love remote printing

Quick print and fits prefect with PLA. When i Get a chance to change spools will print in ABS