First Print February 19, 2014 09:14PM |
Registered: 10 years ago Posts: 42 |
Re: First Print February 19, 2014 09:48PM |
Registered: 13 years ago Posts: 2,947 |
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robster34
OK, now some questions. I've got a little experience with Mendel-class printers and ABS, but very little with this machine and PLA. Here's a very early test print using my 0.4mm 'official' hotend. I've calibrated the flow through the extruder, though it seemed a little low (394).
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First, the PLA is surprisingly goopy. A lot of plastic gets pushed around before it finally lays down a base and starts building. Too hot or too cold? Or something else?
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Second, I'm getting these vertical serrations in the posts. It appears to me that this ISN'T a Z-axis problem as the slope of the posts doesn't change. I'm using the original leadscrew Z axis rather than the cable version. I wonder if this is a temperature problem. I'm using a big, 24V supply so I can add a heated ABS bed later, and I've throttled the duty cycle on the hotend to roughly 1/4 by setting PID_MAX at 63 so I don't burn out the heating resistor. I'm using the default Tantillus Marlin firmware with very small, careful changes. So, it's still using bang-bang rather than PID control. Any thoughts on what's causing the serrations before I start running a series of temperature control tests?
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Finally, I'm new to Kisslicer as well and couldn't find the retraction speed control. Not that I want to change it - I just want to ensure it's at 1000, per the instructions. Where am I missing it?
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Re: First Print February 19, 2014 11:34PM |
Registered: 13 years ago Posts: 2,947 |
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Re: First Print February 20, 2014 01:50AM |
Registered: 10 years ago Posts: 42 |
Re: First Print February 23, 2014 01:17PM |
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Re: First Print February 24, 2014 01:41PM |
Registered: 10 years ago Posts: 42 |
Re: First Print February 24, 2014 02:09PM |
Registered: 13 years ago Posts: 2,947 |
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robster34
I had the same thought, and saw in a Goode previewed that the towers were comprised of very short segments of plastic...not long extrusions. I didn't try to find the offending layers yet, or debug why the gcode looks this way. I've only transitioned to KISSlicer with this new machine, since you seem happy with its capabilities on Tantillus. I'll investigate further later this week when time permits. Thx again.
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Re: First Print February 25, 2014 10:32AM |
Registered: 10 years ago Posts: 42 |
Re: First Print February 25, 2014 11:38AM |
Registered: 13 years ago Posts: 2,947 |
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robster34
Yes, I started with your Tantillus branch of Marlin and only changed the LCD portion to utilize an OLED display and the extruder heater control. I need to better characterize the heater control loop, but I think I've exonerated it with a couple tests with widely different extrusion temperatures. I also used the KISSlicer settings you provided, though I did have to build a template for a 0.4mm nozzle. It wasn't hard, as your configurations seemed straightforward. Still, I need to double-check that when time permits.
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Re: First Print March 06, 2014 09:25AM |
Registered: 10 years ago Posts: 42 |
Re: First Print March 06, 2014 12:05PM |
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Re: First Print March 21, 2014 10:14PM |
Registered: 10 years ago Posts: 42 |
Re: First Print March 22, 2014 01:14AM |
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Problem found and fixed March 26, 2014 12:27AM |
Registered: 10 years ago Posts: 42 |
Bowden Help?? March 30, 2014 09:31PM |
Registered: 10 years ago Posts: 42 |
Re: First Print March 30, 2014 11:10PM |
Registered: 11 years ago Posts: 290 |
Re: First Print March 31, 2014 01:39AM |
Registered: 10 years ago Posts: 42 |
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zungmann
Have you tried pushing the filament manually ie by hand? Is it easy or hard?
My experiences 'jam' in the cold zone of the hotend can cause this problem.
Re: First Print March 31, 2014 03:37AM |
Registered: 11 years ago Posts: 290 |
Re: Bowden Help?? March 31, 2014 03:49AM |
Registered: 10 years ago Posts: 87 |
Re: Bowden Help?? March 31, 2014 11:24AM |
Registered: 13 years ago Posts: 2,947 |
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Re: Bowden Help?? March 31, 2014 12:15PM |
Registered: 10 years ago Posts: 42 |
Re: Bowden Help?? March 31, 2014 05:48PM |
Registered: 13 years ago Posts: 2,947 |
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My Big Fat Greek Filament April 01, 2014 11:08AM |
Registered: 10 years ago Posts: 42 |