Awesome that support looks fake in that image like it was photoshop'd for some reason , maybe thats because its kinda floating off the object , either way cant way to see the cleaned up version. And whats is it btw , spiked helmet for Doomsday preparation , lol. Hmmm.
I think the fact that its 95% TG, instead of the recommended 97% FoodGrade has a little to do with how slow it dissolves, but what is having a more direct affect is the fact that the supports were printed as a solid instead of a typical support structure. The rammus i showed in a earlier post should disolve much faster because of the ammount of exposed surface area of the HIPS.
This may seem like like a strange question, but have you noticed a difference in surface finish/alignment/quality when mounting the E3Ds under the print carriage like that?
I seem to remember getting really clean prints before I upgraded and mounted the E3D underneath the print carriage. Now my external perimeters aren't quite as clean as they were before. They're not bad, but they're not perfect anymore either. I'm trying to track down the cause.
I'm going to remount a single extruder high in the carriage again to see if that's the cause. If it is, I guess I'll need to design another carriage where I can mount the duals high instead of low.
I think that this may be the result of the gimbaling effect of the effector platform. If the platform can we wiggled about the vertical axis the centerline of the extruder can be made to rotate in a slight arc realitive the the part Z-axis.
If the tip of the extruder is on the face of the platform (not practicle from a clearance srtandpoint), the rotation occurs about the tip and there is no side to side motion since the radius to the tip of the extruder is essentially zero. If the tip is moved away from the platform the radius increases and the side to side motion for a given angle of rotation increases.
This may increase the alignment error or maybe not. On second thought just ignore this post and strike it from the record.
Actually nitewatchman, that's what I've been wondering.
Knowing that every discrete position is only an approximation, there's going to be a small error in every position and movement, and any error in position or angle of the effector plate would be magnified the farther away you get from the carriage.
I suspect that for every motion there is a very slight tilt one direction or another, which wouldn't be important with a standard mount, but would stand out more on the low mounted hot end.
I'm going to switch back to a single extruder high mount and see if I notice a difference. I should be able to get to that this week.
I'll print out a pair of parts with the same settings and compare.