I was intrigued by the build plate types like the Fleks 3D, but being cheap, when I read in one review about using Lexan I picked up a couple of sheets (11x14 @ ~$8ea) at my local Homedepot and did some testing. I cut them down to 10 x 14 using some tin snips (fine tooth table saw blade or bandsaw would work too) I found that using a orbital sander with 100 grit paper and 'roughing' up the gloss finish to an even matte finish - I have been able to print any filament I've thrown at it - WITHOUT any adhesive (glue, hairspray, tape, etc). I don't use ABS - but PLA, PETG, Nylon and NinjaFlex have all worked. I can print, take off the build plate, flex it if needed, and pop off the print. If there is any residual filament left that I can't scrape off - I just sand it again to remove it. Occasionally I will re-sand to keep the matte finish - the gloss finish will stick so well you can't get it off. You can still heat your bed if needed up to ~80 c ... but I haven't found that needed / or any advantage. CON: you MUST NOT pre-heat your extruder if you have an auto-leveling printer that uses the nozzle to calibrate level as it will melt a hole in the plate. You will need to change your start G-code to probe for level and then heat the extruder. This is my start custom G-Code in MatterControl I'm using: Code: G28 X0 Y0 Z0 ; home all axes G29 ; probe the bed G1 Z30 F5000 ; lift nozzle M109 S[temperature] ; set the extruder temp and wait I've finally been able to print multi-up prints without worrying about one of the parts getting knocked off or coming loose. I had tried nearly every combination before and always had issues. I printed over 200 pieces of these at 36 up - and not one issue. This is what it looks like from the back side: I was also finally able to print this nearly full length sized product - when I tried to use the heated bed the back end was always peeling up because there wasn't any heat under the last 20-30mm. But on this it just stuck! I created some slide in 'clamps' for the back end of the plate to secure it down .. it's an easy in and out and then I just clip the front with either the 3d printed clamps or some larger spring clips: The back end clips are on Thingiverse: http://www.thingiverse.com/thing:1519876 The front clips are also on Thingiverse - designed by jmascote: http://www.thingiverse.com/thing:1465977 I have 3 of these plates - and can use both sides each for ~$8. I'm really excited how they are working.