jimc wrote:as you use it more let us know if the 40-45c temps is enough to notice a difference in your abs prints warping.
The glass transition temp for ABS is around 70C so its unlikely you will completely eliminate warping below that. I'm still trying to get my heating system reliable so I only have a few prints with heat. At 80C I was able to print ABS on glass with hairspray without warping or pulling up.
The VIKI housing in the attached pic was also at 80C but the first layer wasn't set close enough so it did curl a little bit but not too bad.
The cylindrical part in the attached pic was printed at 80C and didn't have any warping or delamination and when I squeeze it to deform the shape none of the layers separate.
No supports were used for either print.
I'm not sure how much either of these would have warped even without the heat but I'm pretty sure the housing would have pealed up at the corners and the tube would have not been strong enough to squeeze it without layers cracking apart.
More to come after I get my heater system worked out. I've been hacking hair blow dryers but have found that the blower motors get hotter than I'm comfortable with and if the heating elements don't get a strong and even flow of air they get localized hot spots which would reduce their life considerably.