Living in Minnesota, there are many months of the year where my workroom is barely above 60 degrees F in the morning, and doesn’t get above 67 at any point in the day. The print success rate always drops for me when the temps drop, even if I prewarm the resin. After several failures, I finally found a great solution for maintaing a constant temp in the printing chamber, and it’s been working very well for several months now this winter.
The product I bought and adapted for my Form1 is a small egg incubator heater-digital themostat-fan combination that attaches to the vertical arm of the printer. The product is called the “IncuKit™ MINI for Desktop Incubators | Thermostat, Fan & Heater”, and the website link is: http://incubatorwarehouse.com/48-watt-incukit-dc.html
The heater unit is attached to the vertical print head arm by a large, powerful magnet that’s screwed to the heater assembly using a piece of angled aluminum. You just position the unit back behind the print head path. The power cord runs along the side of the vat tray and out the front of the printer, next to the magnetic sensor. Because the cord is small, the printer thinks the cover is closed. I set the digital thermostat temp to 76 degrees F and let the unit run 24/7. It uses minimal energy and keeps the temp within a 1-2 degree temp range constantly, regardless of room temp. So far, I have not noticed any issues related to fan vibration or air circulation, although it’s best to remove the print head immediately after completion of the print so that dripping resin isn’t blown around the chamber.
To aid in the efficiency of the heater, I also bought a silver mylar emergency blanket and folded and taped it together to make a multilayer insulating hood that slides over the orange cover. These blankets cost about $2.50 and the cover is very easy to make, using packing tape and scissors. Mine has a plastic window in it so I can check on the print progress. The mylar cover also blocks stray light from entering the print chamber, and acts as a dust cover too.
That’s it. NO alteration of the printer itself is required. The heater just magnetically locks into position, and you’re ready to go.
Finally, my printer is functional in winter again. Hope this helps others who have experienced cold weather issues.