I’ve searched a bit and found a few threads about using the foam board, but I haven’t found a proven set of settings. Has anyone had success with cutting the foam board and not over melting it? If yes, would anyone share the settings?
I recently cut DTFB with my Basic without melting or flames, but don’t remember the exact settings – I’ll look them up tonight and post them.
Still working on the appropriate score settings to allow easy folding edges à la Flite Test designs, but not quite there yet.
Be advised that most foam boards with the paper-outside foam-inside sandwich are PVC foam = highly toxic fumes like vinyl. None of my signage vendors will cut it on their lasers.
Flame testing foam board, DTFB, EPA foam, & felt pads (Edited)
Wish I’d known that before I tested it.
(Good news is, I’m still here, so good job Glowforge.)
I just checked on dicblick and another site for the MSDS on foam board. I only found polystyrene as the filler. Makes sense, PVC is really hard stuff. Doesn’t mean PVC isn’t used in some cases. Just means you should check the MSDS first.
Of course PS also has its own laserability issues (it just likes to melt), but in the thin layer used here it seems to work.
The guys at Flite Test have been selling laser-cut DTFB for years. Who knew?
Edit: Now that I think about it, while it’s true that they advocate using DTFB for model planes, they don’t explicitly say that’s what they use with their lasers. I’m pretty sure it’s PS, but will have to verify or run a flame test …
The last settings I used on 0.15" DTFB were 350 speed, 50 pews, and 2 passes to get clean cuts with minimal charing, but be sure to test.
This needs to be adopted universally.
Wish I could take credit, but I think it was Tom, Chris, or rpegg that came up with it…
It’s inspired! (Adding it to my vocab henceforth.)
(Whomever is responsible, please step forward to accept kudos for extreme cleverness!)
Pretty sure somebody else used that before me, I just decided to try to spread it.
Reminds me of the rumor mill in high school…chuckle.
Well whoever coined it…great job!
The important thing is that all the cool kids are saying it, and you want to be cool, don’t you?
Not me. I was uncool before it was cool.