what are your slic3r configurations?

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Re: what are your slic3r configurations?

Postby cvoinescu » Fri Mar 15, 2013 3:22 am

brnrd wrote:Also, unless you actually checked the temperature in the melt zone of your nozzle by inserting a thermocouple into it, you won't really know how far off your readings are. I have done this with all of my hotends.

I don't have a thermocouple, but I have a small infrared thermometer that I can use to measure the temperature of the nozzle. It's probably less accurate than the thermistor, but they do seem to agree to within about 5°C. The nozzle is the very stubby J-Head design, so there should be almost no difference in temperature between the bottom face and the inside of the hot end.
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Re: what are your slic3r configurations?

Postby brnrd » Fri Mar 15, 2013 6:27 pm

I'm interested in the IR thermometer that you have. The one I have has a large focus area and so it's inappropriate for measuring hotend temperature.

Thanks.
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Re: what are your slic3r configurations?

Postby cvoinescu » Fri Mar 15, 2013 6:44 pm

Mine has a wide field of view too (45°), but I can always lift the hot end all the way up and measure from below, 2-3mm under the nozzle (almost touching).
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Re: what are your slic3r configurations?

Postby oni305 » Sat Mar 16, 2013 5:26 pm

switch to a 3ohm resistor was a good idea!

but now i have a new problem...

this is supposed to be a cube
Image

Image

Image

it seems a endstop problem...but when i give manual commands everything goes smoothly :( :(

any clue?
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Re: what are your slic3r configurations?

Postby oni305 » Sat Mar 16, 2013 5:32 pm

Solved.... i've done a mess in the firmware :roll:
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Re: what are your slic3r configurations?

Postby brnrd » Mon Mar 18, 2013 10:18 pm

cvoinescu wrote:Mine has a wide field of view too (45°), but I can always lift the hot end all the way up and measure from below, 2-3mm under the nozzle (almost touching).


I'm not sure if that method would be accurate on my IR thermometer. The hole on mine is around 23 mm in diameter which is larger than the j-head's cross section.
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Re: what are your slic3r configurations?

Postby brnrd » Mon Mar 18, 2013 10:22 pm

oni305 wrote:switch to a 3ohm resistor was a good idea!

...


I don't think this is a good idea. That's too much power to heat the nozzle with 12V and you're likely to damage everything when your nozzle goes way over 300C and you may even start a fire.

As far as the problem with your prints, it looks like one of your axes is either missing steps or the gear is slipping in the motor shaft.
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Re: what are your slic3r configurations?

Postby cvoinescu » Mon Mar 18, 2013 10:51 pm

brnrd wrote:
cvoinescu wrote:Mine has a wide field of view too (45°), but I can always lift the hot end all the way up and measure from below, 2-3mm under the nozzle (almost touching).


I'm not sure if that method would be accurate on my IR thermometer. The hole on mine is around 23 mm in diameter which is larger than the j-head's cross section.

You're right. Mine is only about 3-4 mm.
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