Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 05:28AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 05:41AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:11AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:15AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:19AM |
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Quote
ErikL
I'm trying to pring my first object in PETG but for some reason I have layer adhesion problems. Could this be because of printing too cold?
I tried increasing the temperature to 245°C already but while printing the printer reads 216°/245°. It looks like it's not getting hot enough.
Any idea why it's not going to 245 while printing?
Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:50AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:53AM |
Registered: 8 years ago Posts: 14 |
I used PTFE tape, but kapton tape will probably be better. After I did this my printer was able to better maintain temperature.Quote
ErikL
And what kind of insulation should I add?
Were you guys required to do this too? Or is it just my printer not being able to keep temperature high enough...
Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:54AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:55AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:57AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 07:00AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 07:08AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 07:27AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 07:36AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 10:05AM |
Registered: 8 years ago Posts: 30 |
Quote
madias
Good news for printing flexible filaments
The simplest idea was really the best, just an additional guide for the filament prevents loops around the filament gear
Tested with 30m/s working good! More speed give bad results with "soft PLA" even with 230 degrees. But 30ms/s more than the recommended speed.
I have attached a 123D design file and also a STL file for that part.
For myself I used PETG for higher temperature resistance, feel free to experiment.
You also must drill the filament hole a bit (M3-M4, so 3-4mm)
regards Matthias
Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 10:45AM |
Registered: 8 years ago Posts: 30 |
Quote
woutwoot
That kapton tape is there to attach the thermistor. Yes, I'd try adding a few extra layers.Quote
ErikL
There already was kapton tape arround the hot end when I bought this printer so I need to add more layers?
Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 10:54AM |
Registered: 8 years ago Posts: 14 |
Quote
ErikL
Quote
woutwoot
That kapton tape is there to attach the thermistor. Yes, I'd try adding a few extra layers.Quote
ErikL
There already was kapton tape arround the hot end when I bought this printer so I need to add more layers?
I tried extra layers of kapton tape on the hot end but I don't see a significant difference with it... Maybe I had to tape them with some air between, for added insulation .. I just taped them tight so it won't fall off...
But maybe I should try something like this (printed in PETG instead of ABS?) -> [www.thingiverse.com]
Looking at the pictures it seems like it's going to direct the wind more to the object and not so directly to the hot end...
Maybe this is a better solution than extra layers of kapton tape on the hot end?
Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 12:30PM |
Registered: 8 years ago Posts: 91 |
Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 06:19PM |
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Re: P802M Prusa i3 Unofficial Support Thread January 23, 2016 07:15PM |
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Re: P802M Prusa i3 Unofficial Support Thread January 24, 2016 05:25AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 25, 2016 08:14AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 25, 2016 10:33AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 25, 2016 10:49AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 25, 2016 11:12AM |
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P802M Prusa i3 Unofficial Support Thread January 25, 2016 05:13PM |
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Re: P802M Prusa i3 Unofficial Support Thread January 25, 2016 05:44PM |
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Re: P802M Prusa i3 Unofficial Support Thread January 26, 2016 10:03AM |
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Re: P802M Prusa i3 Unofficial Support Thread January 26, 2016 06:18PM |
Registered: 9 years ago Posts: 221 |
Quote
ErikL
Anyone tried these ? [pinshape.com]
Wondering if it's worth something or just better don't try
Re: P802M Prusa i3 Unofficial Support Thread January 26, 2016 06:25PM |
Registered: 9 years ago Posts: 221 |
Quote
madias
ok. I'm done with my experiences with the melzi board. Neither firmware I installed is better than the original installed one and for this I do not have the source code. I have my ramps 1.4 on my desk with minimum connections (not to a real printer) and I'll invest my time for it (nearly configurated the firmware from zero). Remember: You can never install a secondary extruder on melzi, it`s not possible, if one stepper burned out, you can trash the whole board. So some calculations:
Melzi board: 4 Euro
Arduino Mega Clone 6 Euro
5 pcs DRV8825: 7 Euro
So you can get a far better RAMPS 1.4 based system for 17 Euros. So my suggestion: Save your time, use the melzi until it will burn out and have a RAMPS system in reserve.
@ dedi... : Did you try the gcode example shipped on the sd card? there are massive mismatches with the x-axis (if not all axis)
@ dsol: Sorry, I haven't got the baudrate problem. Maybe a driver issue? Remember that on this melzi board there is a FAKE FTDI. About the Z-axis steps: 1600 is correct. What I've done before upload any firmware, I've done a backup of all eeprom settings and compared them after flashing a new one. Not every entry was the same, so I edited them manually.
Even if you won't got in driver hell, they are less functional than the original one. You got the problem with the z-axis, I got the problem with the hotend temp...so:
I think there are many printer variations out here with minimal changes, but this minimal things prevent us "working on the same horse"