So, I have a question of how to interpret a test I just ran. I print (at least so far) mainly miniature figurines. Since moving my printer outside in its own enclosure, after multiple other issues including a “burnt” mirror, I have been getting good prints unless I print more than one figurine at a time. I would get fine stripes, about every 1/2-1 mm that went all around the printer, but worse on one axis, and it has been taking a lot of extra effort to file every print down, and even with that I am usually not getting all of the striping off (good enough, though).
The odd thing is that if I print a SINGLE figurine at a time, I get very little or sometimes no striping noticeable at all. I thought this was likely my screwing up the galvos which I had to clean and move due to a burn on the mirror.
Then I started to read a few threads about people getting striping due to having a heater installed. SO I made a test print. It has a vertical tube like cylinder surrounded by several cones (hollow), which started 5mm wide and tapered to .5mm wide at the top. The idea was to make each layer print progressively more and more quickly in a predictable manner. My hypothesis was that if there is something turning off and on and this is happening on a fairly regular schedule, that the lines should space out and get progressively wider and wider. That is, indeed, what happened. Below is the picture.
I am currently heating a cabinet with 2x 100 watt infrared lightbulbs. The bulbs are about 5 inches from the right side of the moai and slightly above. They are powered by a reptile heater controller located on the left side of the cabinet, about 6 inches from the side of the moai. The power between them runs over the top of the cabinet. I have a few questions:
1). Is there another interpretation of the results of this experiment… can someone think of another cause for this striping given the picture above, given the increasing spacing between the lines?
2). If it is indeed my heating setup, WHY would it cause this striping? How could the interference cause stripes?
3). If it is indeed the heater, what is the best procedure to avoid the interference? The machine is outside, and I find that the high temp resin seems to print better at higher temperature than low, and it HAS to have some sort of heater.
4). Is the interference most likely cause by the lightbulbs, the current running through the wire, or from the thermostat?
Thanks very much for your time.