Due to the fact that I have the same "dream", a heated chamber for Delta, I'll share some thoughts.
1. It's hard to do a heated chamber for delta. Especially due to the fact that Delta's are ... tall. So, most of the heat will go up. Hence, in order to keep the heat on the lower side, you need to have either a high(-er) temperature or to force some down-draft currents by using fans.
2. I noticed in your pictures on your blog that you have a fan on the upper side to "evacuate fumes". This.... will also evacuate heat. I'm printing ABS on .. another type of printer and there are no fumes. So, cartezian or Delta, there should be no fumes, hence no fan required.
3. Yes, temperature inside should be above 40, rather 60-70 or more for ABS. This "should" eliminate warping. Yet...don't go to far as you'll melt the ABS parts....
(self)proposals: due to the fact that warping mainly occurs on the first layers, I'll focus on keeping the first layers heated. I wonder if IR heating won't do the trick?
good luck with your work
1. It's hard to do a heated chamber for delta. Especially due to the fact that Delta's are ... tall. So, most of the heat will go up. Hence, in order to keep the heat on the lower side, you need to have either a high(-er) temperature or to force some down-draft currents by using fans.
2. I noticed in your pictures on your blog that you have a fan on the upper side to "evacuate fumes". This.... will also evacuate heat. I'm printing ABS on .. another type of printer and there are no fumes. So, cartezian or Delta, there should be no fumes, hence no fan required.
3. Yes, temperature inside should be above 40, rather 60-70 or more for ABS. This "should" eliminate warping. Yet...don't go to far as you'll melt the ABS parts....
(self)proposals: due to the fact that warping mainly occurs on the first layers, I'll focus on keeping the first layers heated. I wonder if IR heating won't do the trick?
good luck with your work