This topic contains 35 replies, has 9 voices, and was last updated by 
paulsroom 2 years, 11 months ago.
-
Posts
-
Whoever came up with the idea to sand the PEI bed (@bhudson ?) should be rewarded by CEL with a free Robox. It’s such an incredible game changer!
I struggled with the lifting edges since I’ve received my Kickstarter LE Robox in 2014 and had countless ruined prints, despite perfect height calibration, correct U-shape insertation and IPA cleaning of the PEI. Highly frustrated.
Browsed the forums on this issue a few days ago and came across the sanding suggestion. Sanded mine dry with 600 paper dry in circular motion three times until the gloss was gone, washed under flowing water between each step. I guess the following pictures of before and after prints speak for themselves. Perfectly flat prints! Even small objects adhere perfectly without any brim.
I’ve learned that CEL will adopt the improvement and ship future Roboxes with a single-sided sandblasted PEI bed.
Top: Before sanding. Bottom: After sanding.This is very interesting… Maybe have one side sanded, one side natural? I’m tempted to give this a go.
One side sanded only is the way to go. From what I’ve read in the Robox support portal CEL plans to sandblast also only one side. Note that most PEI sheets aren’t perfectly flat, but are bowed. The U-bowed shape (so sides bowing up, center sitting lower) is the way you want to install the sheet, so the sheet moves as little as possible in Z direction under the pressure of the nozzle. That said that’s also the side you want to sand.
@dr-woo I can’t take credit for this one, though I have found it is a good solution. I have stopped using the PEI for PLA and use a GeckoTek plate instead as it works even better than the sanded PEI.
I operate two Betas and four Production Robox.
I am the US/Canada Technical Support engineer for the Robox.
www.hudsondesignlabs.com@bhudson Was that rectangular, or did you cut the plate to shape? I’m tempted.
I’ve been well out-of-the-loop for months; I literally blew the dust off my Robox this weekend.
@gid I ordered it from them cut to shape. They got pretty close, too, it fits and doesn’t move. It solved a lot of problems on my current PLA project. I am very happy with it, happy enough that I bought another one for my Cobblebot that doesn’t have a heated bed.
I operate two Betas and four Production Robox.
I am the US/Canada Technical Support engineer for the Robox.
www.hudsondesignlabs.comShipping to UK is $23 for one or $30 for two, $37 for three… It is worth joining up in ordering it?
@click, I was considering whether to order one for PLA, but even more so when they produce their ABS plate, as I get far more problems with ABS lifting. I was planning on waiting until they get their ABS plate available, but I’d certainly consider coming in on a joint order if that proved practical. You would need to add some UK postage for forwarding on, but it should still be a saving on individual orders.
I did a schematic of the 2nd gen build plate — http://www.roboxing.com/_detail/robox-pei-printing-surface-2.png?id=printing_surface — which could be handy when ordering from GeckoTek. Of course, it might be worth them just adding Robox to their standard list.
I too will wait for the ABS plate I think, unless @bhudson can report how their PLA plate works with ABS…?
@gid I don’t feel like possibly wrecking my PLA build plate, so no, I won’t be testing that. Sorry.
I operate two Betas and four Production Robox.
I am the US/Canada Technical Support engineer for the Robox.
www.hudsondesignlabs.com@bhudson No problem 🙂 I wasn’t sure if you’d tried running it hot. It’s been a while since I looked at the GeckoTek offering, but I wasn’t sure if the PLA plate was only for cold PLA or whether it was just optimised for that.
Hello @click, I join you on buying the GeckoTek plate, if you can foward it to Portugal (I pay the extra shipping to Portugal).
Best regards,
Joao Quaresma.
You must be logged in to reply to this topic.
