No-Math Focus Ruler


Leveraging the recently-released Set Focus tool, I’ve designed a tool to help place materials when the crumb tray has been removed, no maths required.

If your material is between the lines while resting on the bottom of your GF – not the crumb tray, you should be able to use Set Focus in the UI. If the top of your material is below the bottom line, use your favorite method (sheets of PG, tiles, 3-D printed stands, matching sets of trained hedgies, etc.) to elevate it and recheck. Repeat until the top is in the sweet spot between the lines.

I recommend elevating materials about halfway between the lines. It should be high enough for the focus to work correctly, but not so high as to interfere with the air-assist scoop.

No-Math Focus Rule (4.9 KB)

Black = engrave (optional)
Green = score
Red = cut

Before using, make sure that the tool printed at the correct scale.
The long leg is 2 inches (maximum thickness w/o the crumb table), and the short leg is 1/2 inch (maximum thickness with the tray).

Standard Disclaimer – YMMV, use at your own risk. Do not bend, fold, spindle, or mutilate. Make darn sure you printed this at the right size and understand what the tool is and isn’t meant to do. In fact, you probably shouldn’t use it at all.

Engraving Larger Depths (Removing crumb tray)
Using "set focus" with material over .5" (No tray)

ROFL! I’m gonna risk it! Thanks for the file…it’s a good idea! (And the general shape matches your earlier little half inch marker, so it keeps the stylishness going as well.) :+1:



I was just going to create something myself for this purpose. Thank You!



Great idea Dennis, Thanks! :sunglasses:


Brilliant. Thank you.


Um yeah…I’ll risk it, too. Thank you, Dennis!


Nice little helper!


Very awesome! I think it’ll pair well with the post I made in the FB group about oversized materiel and using set focus. Think I’ll post it here so I can link your tool.


Fantastic! I wish I had thought of that lol Thanks for sharing!


That’s super. I think I’ll make one and stop doing the math :slightly_smiling_face: Thanks!


Cute! :hedgehog: Did you miss this @jules?
Thanks for the file. I’ve yet to run a job with the crumb tray out; partly because I’m not strong enough to open the front, etc., but also because I felt daunted about the math. I think this is a great incentive to come up with something to do and hubby can get the crumb tray out for me!

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Chuckle! Yes, I did…been dealing with IRS issues since yesterday. Haven’t been in the best of moods. Done now though.


Sorry about the IRS stuff. Never fun! Glad you’re past it now. :slightly_smiling_face:

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I still have yet to try anything without the tray in…I’ve been too intimidated. But, now I know there was a reason to wait so long…for someone to design a very cool simplified tool for me to use. :slightly_smiling_face:

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Great design, thanks!


Oh man, when I retired and lost the schedule C life got much better.


As long as the material is inbetween these lines does the machine automatically focus or is that a option I am looking over on my page? If you are using a non proofgrade material it asks for you to give an estimate on height…

Thanks for the tool!


Yes and no. It will autofocus either when you use the set focus tool or at the beginning of a print. The advantage of using the set focus tool first is that it will change the camera view based on the height it determined and so placement should be fairly accurate, this basically removes the need to enter a manual material height.


Is the set focus a button in the UI ? New user here… can’t find it! Thanks for the help


It’s behind the gear in settings.