I’m currently using a spring steel plate with a G11 print bed from Evashape (closed down unfortunately) straight onto the factory magnetic pad. They use a thicker spring steel plate than OEM and together with the stiffness of the G11, it stays pretty flat and has a much stronger magnetic hold than OEM. Total thickness is around 4mmish with the G11 sheet around 3mm of that.
Happy enough with the G11 print bed as I mostly print PC-PBT from Polymaker these days.
The best let’s call it ‘epoxy resin print bed’ I’ve used is a product called Printbite Plus made by a company that made a custom extruder call FlexDrive. I don’t think they’re around anymore either. I managed to get a large 500mmx500mm sheet of it a couple of years back and even that took months to get.
3D Printer Gear still have some sheets of it for Ultimaker and FF CP2 already mounted on a spring steel plate if you want to try it.
Actually some of the best prints in POM I’ve had were with my trusty FF CP2. All temps were cranked to the max and the max speed was slow by today’s standards, but it cranked out super strong and tough parts albeit only 50mm in diameter. It seemed to hit the sweet spot of part size, passive heating volume and print speed to get great prints.
I wanted to print custom handles for various projects using M12 batteries and POM worked great. Batteries slide in nicely and threads are smooth and strong. I can crush it in a vice until the sides touch each other without the layers separating. Strong stuff.
Up to 50mm you’ll be ok with a passive enclosed chamber like the X1C.
Up to 100mm you’ll need active heating which is why I bought the X1E. (My X1C got stolen)
Any larger than that, you’re into chambers temps of things like the Method from MakerBot and the like.
Having said all that, the shrinking and warping with POM is so high it really isn’t a material that can be functionally used for anything of size or mm dimensional accuracy in prosumer printers.
As mentioned, I’ve mostly moved on from POM and I use PC-PBT as my engineering filament of choice.
Real world use:
I had to have a double ankle surgery and I didn’t want to be stuck in a cast for 6 weeks and deal with all the annoyances that causes.
So I scanned, modelled and printed my own custom AFO casts, took them with me to the hospital and the surgeon put me in them after the surgery.
Meant I could walk around, take them off to shower, clean them etc etc. At 5mm overall thickness 100% wall loop infill, they’re unbreakable with bare hands.
If you do end up making your own plates, use 3M 467MP adhesive sheets as the bonding material. That’s the stuff used commercially and the correct thickness too.
