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What do you attribute your ease of support removal to? Any tips?
by
daufhammer
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General
Nice! I have never been able to get my support material to remove very easily... what type of plastic is that and slicer are you using with what settings?
by
daufhammer
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General
I have actually been printing with white Ultimachine PLA recently and things seemed ok for a while, but latley i have been getting some blobs that do kind of spurt out and then turn into a brittle chalky like substance rather than nice normal PLA.
I have usually had excellent results with Ultimachine PLA, but this batch of white does seem to have so weird things going on that i haven't experienc
by
daufhammer
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General
richrap Wrote:
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> I also tried the 64bit version, that reports as
> being 0.9.6-Dev.
I also downloaded the 64bit version of 0.9.5 and mine also shows 0.9.6-Dev... i wonder if the wrong file was accidentally uploaded
by
daufhammer
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Slic3r
a_shorething Wrote:
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> temp and feed rate and then blows out a bubble or
> blob of filament (I even got some splatters on my
> hand when I was watching to see if I could
> determine the cause the other day) leads me to
> believe ther is something inconsistent in the
> filament itself.
When you say it blows out a bubble or s
by
daufhammer
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General
Have you measured and calibrated the E steps/mm value to put in your firmware? It looks like your value is too high and too much is being extruded which would cause the inside to be too small and outside to be too big. This is also causing rounded corners instead of being nice and square.
If you haven't calibrated it, here is a great tutorial by RichRap about how to do it. This is SUPER import
by
daufhammer
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Printing
What type of climate do you live in? I have been wondering if my filament is absorbing too much moisture when it sits out. My spools usually sits out on top of my printer until the spool runs out which could be up to a few months. I live in southern California where there is very little humidity, but I still wonder if enough moisture is absorbed to mess up my prints. I haven't had any super poor
by
daufhammer
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Printing
So i feel really bad because i started this thread a long time ago and thought i posted that i solved the problem, but must have totally forgotten to post what the problem was.... Hopefully it has helped people see the many different causes of missed steps and how to fix them...
My problem ended up not being missed steps at all, and was indeed mechanical like we all thought since i had checked a
by
daufhammer
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General
Thanks that makes sense, im actually using the older Pololu Electronics and after comparing the RAMPS schematic to the Pololu Electronics Schematic i don't think D1, which connects AM-VIN to the 12V source, exists for my setup. It doesn't even look like AM-VIN is even connected to anything for my Pololu Electronics, so I think I am good to go right?
by
daufhammer
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RAMPS Electronics
I am currently using an ATX power supply for my 12 volt power, but it can only put out about 6A on the 12v line, and im thinking of moving up to a heated bed, so i need a bigger power supply.
I have a 13.8 volt 12amp switching power supply (from my old R/C days) that I thought of using, but just wanted to make sure there wouldn't be any problems running things at 13.8 volts.... That's pretty clo
by
daufhammer
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RAMPS Electronics
Thanks for the feedback... I just tried decreasing my max z feedrate to 2 mm/s along with making the DEFAULT_ACCELERATION and DEFAULT_RETRACT_ACCELERATION match my max accleration settions of 450 in the X and Y directions. I also decreased the ZJERK to 0 and decreased XYJERK to 10.... You can see all my current settings below...
#define DEFAULT_MAX_FEEDRATE {500, 500, 2, 45} // (mm/sec)
#define
by
daufhammer
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General
***Edit: I guess i should specify that i have a Prusa iteration 2 running lm8uu's, and pololu electronics since different RepRap machines would probably need different values
Sublime Wrote:
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> No I am not recommending to turn up the
> acceleration just pointing out that they were not
> the actual defaults. The defaults are really
&g
by
daufhammer
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General
Are you saying i should increase my X & Y acceleration to 9000?
I had decreased the X & Y acceleration it because i was missing steps in both directions... I posted the wrong numbers before though... i actually have X & Y acceleration decreased even further to 450 because even at 900 i was still missing steps. So it's actually like this...
#define DEFAULT_MAX_ACCELERATION {900,900,1
by
daufhammer
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General
I am having trouble keeping my Z motors in sync. After trying to eliminate all friction and binding by upgrading to lm8uu's, flexible couplings, well lubed z leadscrew, etc, i don't think friction or binding is the issue anymore...
I am starting to wonder if my max z feedrate, acceleration or jerk figures are too high or if there is some other setting that needs adjusting. Here is what i current
by
daufhammer
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General
Thanks Nophead, im printing in PLA and when i extrude into thin air, the strands come out about .37 in thickness.
My nozzle is fairly fine, the flat part of the tip is 1.3mm in diameter, so it makes sense like your saying that the width can't be any wider than 1.3mm or it won't be pressed flat.
If i calculate what you suggest....
The cross sectional area of my extrusion into air would be (.37
by
daufhammer
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General
I know I have run across these in various places in the past, but i can't seem to find them again....
What are the general principles/guidelines for the maximum layer height given a certain nozzle orifice size? And also what would be the max width/height for a given nozzle?
So for example I have a J-head hot end with a .35 nozzle... what would be the largest recommended layer height and width?
by
daufhammer
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General
I had the same problem, when i printed out the Prusa v2 x-ends the hole for the z-axis leadscrew nuts were way too big... so much so that the nuts could spin all the way around... I posted a topic about it here
It wasn't a problem with my printer, that was just the size that the .stl's were made. I changed the size in the .scad file and re-compiled it, then reprinted them and they came out perf
by
daufhammer
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General
PastaRocket848, that's helpful to know, I'll have to try sticking some thin wire up the nozzle to see if things were a little clogged up. I didn't even think to check if my nozzle was clogged/partially clogged or not because it was still extruding (i figured it would either extrude or be jammed, didn't think there could be middle ground).
I was also thinking about how to determine how much force
by
daufhammer
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General
Thanks ECSuyu, that makes sense. I will also have to try a fan again over the cooling flutes i imagine that will help stop the PLA from softening higher up on the hot end and decrease the resistance i am getting.
I changed my nozzle size in Slic3r to .35 and things seem a lot better! I tried a part with a long runs of infill and my extruder motor isn't skipping steps anymore, so it seems like th
by
daufhammer
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General
Ok, so this is super embarrassing, but I just realized that my J-Head Mk IV-B ACTUALLY has a .35 nozzle, haha!
I could have sworn when i ordered it from here it said it had a .5 nozzle, but i just measured the fillament extruded into air and it comes out anywhere between .37 and .41, so it would have to be a .35 nozzle. And I double checked the description on the website and it says a .35 nozz
by
daufhammer
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General
Hey ECSuyu, i don't think the problem is with my idler pinching too tightly, i have loosened it all the way until it starts to strip the filament and it still has the same problem.
I also took off the idler and tried pushing it by hand (which i have done before) and it is VERY hard to push... i basically push as hard as i can and it still comes out REALLY slow.
So i do feel like it has to be so
by
daufhammer
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General
I just switched from a basic home made hot end (that actually worked great!) to a J-Head Mk IV-B with a .5 nozzle and it's giving me a bit of trouble.
Im printing in PLA and it seems to be requiring a LOT of force to extrude and is causing my stepper to miss steps.... It usually happens when doing infill probably because im doing infill at 60mm/s as opposed to 30mm/s on perimeters.
What happen
by
daufhammer
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General
I just upgraded my Prusa Mendel's X axis to the iteration 2 version and have had trouble getting my Z smooth rods exactly parallel because of the fixed X smooth rod length... like other described above.... anyone found a good method to get everything spaced correctly and the Z rods perfectly upright and parallel?
Also, it seems the center spacing for the Z lead screw is slightly different on the
by
daufhammer
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General Mendel Topics
Ok, well at least im not crazy, or don't have abnormally sized M8 nuts....
Well, I just decided to edit the configuration.scad file and uncomment the m8_nut_diameter line and changed it from 0 to 12.7 which is the size of my 5/16 SAE nuts. I recompiled and exported the file as .stl and everything looks great. I even pulled up at the same time both the old .stl and the new one i created and could
by
daufhammer
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General Mendel Topics
Im currently upgrading from the original Prusa Mendel (SAE) to the Prusa v2 LM8UU.....Im planning to use SAE hardware (which I thought I read was compatible with the v2 design).
I just printed out the LM8UU version of x-end-idler.stl but the hole for the z axis captive nuts seem to be way too big. A 5/16th nut just spins completely around in there, and an M8 nut can just about spin all the way a
by
daufhammer
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General Mendel Topics
Wow thanks for that explanation Nophead! That's really helpful to know! So i won't bother reducing the microstepping for my extruder motor.
I still think there may be an acceleration issue though. Any thoughts on what a reasonable setting would be?
by
daufhammer
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General
@C. Cecil
In theory i would think lowering the microstepping would increase the torque, but i was wondering if the increase was significant enough to give it a try. If it's only increases it very slightly it probably isn't worth it and best to figure out other solutions.
@Andrew Diehl
Im only printing perimeters at 30 mm/s and Infill at 60 mm/s (although now that i think about it, my extruder
by
daufhammer
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General
My extruder motor is missing some steps every now and then, and I already have the motor current turned up about as high as i think i can go without melting my PLA extruder mounts due to a pretty hot motor.
Would dropping the microstepping down to 1/8 or 1/4 instead of 1/16 help squeeze a little more torque out of my motors without increasing the current or temperature? (I know i will have to ch
by
daufhammer
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General
rhmorrison Wrote:
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> Turn off the automatic temperature updates
> (checkbox).
I also tried turning off the "Monitor Printer" check box, which is what i think you meant to say. I also bumped up the process priority of python.exe (pronterface) in the Windows Task Manager to make sure it had all the processing power from the computer it n
by
daufhammer
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General
If you guys are able to produce the quality product that you say you are, i would definitely buy from you!
by
daufhammer
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General
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