Thanks Ray, I'll keep this in mind for things to experiment with. James.by JamesK - General
Wow, I didn't realize the cooling settings made that much difference for abs. Out of interest, what settings were you using that produced the first print?by JamesK - General
Are you using an 8mm leadscrew? If so, it probably has 2mm pitch and 4 starts. If you put 2mm into the calculator you get 1600, but the 4x starts gives an actual lead of 8mm, hence the 4x factor in your measured result.by JamesK - Printing
Sorry for the bad formatting. It's a link to the calibration guide. I meant, how did the calibration tests go?by JamesK - Printing
Interesting machine. If they are using long strand fibers then I assume their print head will have to be able to cut the strand before each head move. I wonder how they match the fixed length of the fibers to the variable extrusion ratio. That seems difficult.by JamesK - General
Ah, you mean the position of the print head started skipping, not the movement of filament through the extruder?by JamesK - Printing
QuoteKhilbornIf I tighten the belts any more the extruder starts skipping. I wonder why? Not sure why tightening the belts for the X & Y would have any affect on the extruder.by JamesK - Printing
Quotewaitaki The only way I can see that cone being printed is to start it with the small end down on the glass rather than the fat end. Looks right. There's a plated version shown here with the cone small end down.by JamesK - Printing
Ah, I see. Thank you.by JamesK - Printing
They look like neat devices. Do they have an adjuster for setting the trigger distance, or do you just move the entire sensor up and down? Not sure I follow your suggestion for connecting via a LM7805 - that's a 5V voltage regulator isn't it? Connecting it across the endstop pins seems a little odd.by JamesK - Printing
Glad you found a solution that gives a good print (hey, where's the photo of that one!). I still have no idea why the small areas work with the hex fill, or the test 70x70 square that you did. There must be some really interesting physics going on!by JamesK - Printing
Is it possible that the problem is being caused by the honeycomb infill pattern creating sealed compartments as you try and cover the top? Any change in the temperature of the air in those compartments would cause the top layer to either collapse down or bow out. It looks from your last photo like the cells are warming up as they get covered over and the expanding air is popping out the first topby JamesK - Printing