k sorry
Brian Kulyk 204.887.6988 On Sun, Oct 13, 2013 at 11:20 AM, d-_-b <thor.robin...@gmail.com> wrote: > Re-read my numbers. > > > On Sun, Oct 13, 2013 at 11:04 AM, Brian Kulyk <br...@kulyk.ca> wrote: > >> If 174.6 is too high, and you are having trouble getting the first layer >> to stick, then changing it to 174.5 will raise the print head off of the >> glass by an additional .1mm making it stick even worse, and 174.4 would be >> worse yet. I think what you want is to move in the other direction, 174.7 >> will move the print head closer to the glass. With ABS that seemed to be a >> little too close, but PLA could be different, also now that the print head >> has crashed, the measurements could be way out. >> >> >> >> >> Brian Kulyk >> 204.887.6988 >> >> >> On Sun, Oct 13, 2013 at 2:43 AM, d-_-b <thor.robin...@gmail.com> wrote: >> >>> tl;dr -- Kapton needs judicious replacement, Thor needs help >>> cleaning the tip. >>> >>> The tape does indeed need replacing. There are a couple tracks >>> through the kapton from the head sliding while pressed down, but they do >>> not interfere with objects printed at the center of the print bed. As there >>> appears to be only one or two strips worth of kapton left on the roll they >>> may be of better use to us to do emergency fixes there until new supplies >>> arrive. >>> >>> I was in tonight and did several test prints. The head was running >>> quite high above the print bed. Extrusions from it were showing gaps where >>> the material was waving and warping as it was being layed down. I have not >>> seen many prints with PLA but I did see some parts printed successfully by >>> Stef. The prints at the 174.6mm mark did not show the same defined edges >>> and indeed some of the edges were so soft and uncontrolled when being laid >>> down that they folded under and over each other or piled up in clumps to be >>> pushed around by the print head as it passed over. >>> >>> I moved the print head Z axis measurement in the G-Code preamble in >>> increments of .1 from the original 174.??mm to 175.5mm. If the print was >>> failing I paused the print, moved the Z axis up 30mm, and On each >>> successive pass, the first layer got closer and closer to being evenly >>> printed and subsequent layers were more defined. After setting the Z axis >>> height to 175.5mm, the PLA did not stick to the kapton, and instead swirled >>> around the hot end. I don't know if this is a result of the Z axis setting >>> being too high, or if the PLA did not stick to the bed for other reasons. >>> 175.4mm was still producing a very poor quality result that was much too >>> thick. >>> >>> I stopped the print, moved the head upward on the Z axis by 20mm or >>> 30mm, then tried to remove as much of the PLA from the head as possible. I >>> sent a reverse command of 5mm, and released the PLA feed line, pulling it >>> out of the machine. After doing some further cleaning of the print head I >>> snipped off melt on the PLA feed line, re-inserted it into the print head, >>> and let it warm up for a minute or so. >>> >>> Attempting to extrude 2mm got nothing, a further 2mm failed to >>> extrude any material. I do not know if acetone is the right thing to be >>> using to clean out the PLA so I did not attempt to use it. I am also not >>> sure how to go about properly cleaning the extruder from the outside >>> without risking damage to the thermistor or other components. If someone >>> can point me in the right direction I will clean it up properly. >>> >>> >>> >>> >>> >>> On Fri, Oct 11, 2013 at 11:11 AM, Stefan H.A <stefan...@gmail.com>wrote: >>> >>>> I reduced the height by .1mm because I was having issues with prints >>>> releasing from the bed half way through. I did a number of prints >>>> successfully after that though. As Brian said the height changed after we >>>> changed the z axis end stop and the command is g92 not g2. We did that to >>>> give the operator more time to react if the z endstop fails again. >>>> >>>> I tested it and pulling the usb cable is not an effective emergeny stop >>>> because the arduino seems to get power from both the usb and ac power >>>> supply. This means to power off the arduino you need to unplug the the usb >>>> and turn of the ac power. We should fix this. >>>> >>>> Does the tape need replacing? We are almost out of kapton tape so I >>>> think we should order some more. I would do it but deliveries often go >>>> missing from my mailbox. If anyone is willing to place an order please >>>> check with me before purchasing as some options are better than others. >>>> Also I think the printer has earned enough money to buy itself some tape. >>>> >>>> I think that's too large of a number, the correct height is now (after >>>> installing the mechanical switch) something like 174.6. The exact value can >>>> be found by looking at the custom gcode settings in slider. >>>> >>>> You should not have to be entering this code manually, did you reuse a >>>> gcode file, that was created before? Doing so is probably a bad idea. >>>> On Oct 10, 2013 11:07 PM, "Ric Lim" <riclim...@gmail.com> wrote: >>>> >>>>> yeah they did. I did the emergency switch off (i.e. pulling the usb >>>>> cable) but not before the head touched the bed. It did start from top >>>>> though so maybe the point at which it prints needs tweaking? Tried g2 >>>>> z184 (?) also but still the same result. >>>>> >>>>> On 10/10/13, Alex Weber <alexw...@gmail.com> wrote: >>>>> > Has Stef, Brian, or Thor shown you how to use it? There's quite a >>>>> bit that >>>>> > goes into operating the printer correctly. >>>>> > >>>>> > >>>>> > On Thu, Oct 10, 2013 at 7:42 PM, Ric Lim <riclim...@gmail.com> >>>>> wrote: >>>>> > >>>>> >> I've tried printing on the 3D printer tonight and the head keeps >>>>> touching >>>>> >> the bed so the strips were scratch in the lower left part. >>>>> >> >>>>> >> _______________________________________________ >>>>> >> SkullSpace Discuss Mailing List >>>>> >> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>>>> >> Archive: >>>>> https://groups.google.com/group/skullspace-discuss-archive/ >>>>> >> >>>>> > >>>>> _______________________________________________ >>>>> SkullSpace Discuss Mailing List >>>>> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>>>> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >>>>> >>>> >>>> _______________________________________________ >>>> SkullSpace Discuss Mailing List >>>> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>>> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >>>> >>>> _______________________________________________ >>>> SkullSpace Discuss Mailing List >>>> Help: http://www.skullspace.ca/wiki/index.php/Mailing_List#Discuss >>>> Archive: https://groups.google.com/group/skullspace-discuss-archive/ >>>> >>> >>> >>> >>> -- >>> -- >>> ) thor.robinson; >>> ) icon/phreshlyspun/ppca/skullspace >>> >>> -----BEGIN GEEK CODE BLOCK----- >>> Version: 3.12 >>> GMU/O/AT/! d- s+:+ a C++++ UL++++ P L+++@ E---- W@ N! o K? w--- >>> O- M-- V? 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