About this 3D model

After modeling a part using Solid Edge, I decided that PLA would be too brittle for my print. The part would be exposed to the elements and needed to be strong. After doing some research, I concluded that ABS would be a much better solution, so I placed an order for a spool of ABS. I was concerned that printing ABS without a heated bed would be next to impossible. Most 3D printer manufacturers recommend printing ABS only if you are using a heated bed. After completing a few test prints, I realized that it was very possible to print ABS without a heated bed; so much so that I printed out over 30 parts without much effort. Below are the settings I used. Printer: Type A Machines Series 1 Build Platform: Glass with sanded painters tape @ 23 degrees Celsius Nozzle Temperature: 239 C Nozzle Size: 0.5 mm Slicer: Simplify 3D Layer Height: 100 microns Brim: 5 cm FYI: Sand the tape a lot. If the print fails print again ASAP to maintain some heat on the build platform. UPDATE: I attempted to do this again today with 150 grit and my prints were failing. I realized that for my previous prints I used 100 or 60 grit. Now I'm using 60 grit and my prints are working again. For more information go here http://helpme3dprint.com/blogs/news/13574674-printing-abs-without-a-heated-bed https://www.youtube.com/watch?v=_TmWzsvtYRA The filament used in this print came from http://www.ORDSolutions.com The amazing 3D printing software used in this print can be purchased at http://www.simplify3d.com Please comment! Thanks, Malcolm