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tmostad

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  1. tmostad

    3d solex 0.6mm print core in CURA

    Bump! Nobody answered JohnInOttawa's question so I thought I'd give it a bump because I have the same question: I also presume, since cura can't handle 0.6 AA yet, the gcode to program an AA hardcore to 0.6 would just screw stuff up Is that correct? Maybe it will be a moot point when Cura supports the CC hot end? Also, I just installed Bondtech QR extruders and printed ColorFabb XT-CF20 with a .6 mm ruby nozzle with line width set to .15 mm, The results are good but I think I am seeing just a bit of over-extrusion. Anyone else seeing that?
  2. I purchased a spare feeder for exactly this reason. As long as there isn't something I am missing then I guess I can live with it the way it works (as long as I remember to override the error instead of blankly staring at the printer wondering why it isn't printing...)
  3. I have a UM3E and a Solex Hardcore 0.4 steel nozzle printing XT-CF20 using a recipe I found somewhere in this forum. It prints beautifully! However when I send a print to the printer it complains that the material is not compatible with the Hardcore and every time I have to manually override the error to get it to print. The print core is set to AA 0.4 and the profile is custom for the XT-CF20. The material on the printer is set to nylon. I must have set something wrong?
  4. Deleted. Issue resolved..
  5. tmostad

    Where to find new firmware description?

    Yes and no. The firmware version that just download is 4.2.5. Is that the same as 4.2 as described in the News?
  6. Pardon my ignorance but multiple times I have started my UM3E printer to see a "there is new firmware" message. As I am apt to do I usually install it but I am always curious as to what has changed or been added but when I come to this forum I typically cannot find anything resembling "release notes" except when it is a major release. Perhaps I am missing something obvious and hopefully you can point me in the right direction. Thanks in advance.
  7. tmostad

    UM3E Bed leveling Fails

    I did an auto level then as the printer printed I adjusted the back screw to lower the plate to get a fairly even layer. I then stopped the print removed the print and did another auto level. Again the front of the printer is fine with a gradient to the back of the printer where the layer is nonexistent. Auto leveling is simply broken on my machine. Not sure where to go with this.
  8. When I auto level the bed on my UM3E the head is always closer on the back, so close that it actually touches the bed and the extrusion is nearly nonexistent. The front is perfect but the print is a perfect gradient front to back. I've noticed that the rear spring is very much less stiff than the front two. Could that be the cause? Any other ideas?
  9. It doesn't snap in. It is held in place with the arm that guides the filament. Not a super positive feel to retention but it works. BTW - Due to the way the arm is designed it matters which way the filament is wound on the spool of some spools. For example, the spool design plus the direction of wind means you'll have to rig up some way to use Matterhacker's Pro filaments. I don't know about the others. It would have been nice the design was more universal.
  10. Cold you make a picture of that? is it sanded or what is it like? If it was sanded - wouldn't this result in an feature like a buildtak mounted? Here is a picture. It shows a close up with a nickel on the glass to help you understand the scale. The surface is smooth-textured as you can see. I don't know anything about buildtak.
  11. I tried to lessen the heat gradient on the build glass by putting a sheet of .008" copper under the glass but as I feared it is simply too thin to make any difference. The gradient is still 7+ degrees C center of plate to 1 inch from edge. Is there a spec for this for the printer? Might I just have an out-of-spec heating element?
  12. I don't know about bad batches or whatever. I know I posted some pictures here that clearly showed serious inconsistencies in the first layer thickness that no one suggested that I might have bad glass. I assumed what I was seeing was normal. I then purchased some borosilicate glass having heard that is was better. No, it was the same or maybe a little worse. I can say with certainty that the Neoceram is really flat -- not perfect of course but flat enough that auto-leveling actually works. I wonder about warpage that might be caused by the clips pulling the glass onto the non-flat aluminum plate but at this point it seems to be minimal. My biggest concern is the temperature gradient caused by uneven heating by the heating element. I have more experimenting to see if I can at least lessen that.
  13. I doubt this has anything to do with convection cooling. I took the plate off and stood it on edge for a series of pictures. The gradient was still quite visible in the pictures. I believe the heating element is not of great quality. 5 to 7 degrees of difference over just a few inches is really a lot. I have considered trying thin copper foil under the glass to see if it makes any difference. Copper has 2X the thermal conductivity of aluminum (or aluminium for some of you). Thin copper may not make a significant difference but it is cheap and easy to try. Now if I just had a diamond plate... It has 5X the heat flow of copper. Wonder when that upgrade will be coming out?Oh yeah, I have tried the ABS slurry and Wolfbite for ABS as well. ABS shows really serious warping and detachment from the glass, much worse than PLA (I made a front door but that had minimal benefit). Next I am going to try blue tape with PLA to see if it helps.
  14. As you can see from the pictures I posted, it didn't do much if anything to even out the temperature gradients. I was seeing 5 to 7 degrees before and about the same with the black glass.
  15. Plus shipping which they seem to want to charge a lot for. Fortunately they are driving distance away for me. If bed flatness isn't an issue for you then spending the extra money won't net you much but if it causes you the kind of problems I was seeing then $75 on top of the $3500 or so doesn't seem excessive. In my opinion, this glass should be original equipment for this printer.
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