<![CDATA[SoliForum - 3D Printing Community — Slic3r and/or printing anomaly]]> https://www.soliforum.com/topic/978/slic3r-andor-printing-anomaly/ Sat, 19 Jan 2013 22:48:11 +0000 PunBB <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9925/#p9925 Just had something very strange happen.  I was a few hours into printing an electronics enclosure when the extruder stopped extruding (filament divot) AND the edges of the object being printed lifted up far enough that the extruder kicked the part out the front of the printer (knocking the glass bed loose from the clamps). Never seen that before.  I've printed this same part before, on the other printer.  Strange.

Anyway. 

Given that it would cost $30 to get some new rods from Solidoodle, I came up with another approach.  The Y rods are held in place by a hose clamp on each end.  It turns out that you after you loosen the clamps, you can rotate those clamps on the rod so that one is maximally clockwise and the other is maximally counter clockwise.  Once you have tightened them down in that configuration, the rod can no longer rotate due to printer vibration, and the printer should not encounter the warp in the rod again.

Here's hoping I'm right.

]]> Sat, 19 Jan 2013 22:48:11 +0000 https://www.soliforum.com/post/9925/#p9925 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9911/#p9911 I don't think they are hardened.... it looks like regular ground drill rod http://www.use-enco.com/CGI/INPDFF?PMPA … PG=INLMK32

]]> Sat, 19 Jan 2013 19:14:21 +0000 https://www.soliforum.com/post/9911/#p9911 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9910/#p9910 Replacement rods from Solidoodle are $6 apiece, which seems reasonable.  But they want $18 to ship 2 of these, which seems absurd.

I went to  McMaster Carr, and all I could find in 8mm was hardened shafts for $12 apiece.  Not sure exactly what Solidoodle might be using.  Maybe one of you will know better than I

]]> Sat, 19 Jan 2013 19:06:20 +0000 https://www.soliforum.com/post/9910/#p9910 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9903/#p9903 I'm thinking it is a bent guide rod.  After rotating it, and adjusting the bed to level again, the print is proceeding normally.

What would be a good way to obtain replacements for those rods.  I have a band saw to cut them to length, but wonder how easy it would be to get straight rod through the mail

]]> Sat, 19 Jan 2013 18:51:07 +0000 https://www.soliforum.com/post/9903/#p9903 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9901/#p9901 The back rod runs through bushings and the idler pulleys on the front are on bolts.  When you tighten the belts it adds friction to both of those places, making the axis harder to move.   The bushings and the front pulleys would be better off replaced with bearings so you can keep the belts tight and maintain smooth motion.  There is a tradeoff between loose enough to move, and tight enough to keep the x carriage stable.  I havent really figured out what the balance is, but I tend to keep the belts looser.   I have some bearings to try out, but there some other projects in line ahead of that one.   

I don't know a correct belt tension.  I usually seem to run it between 3 and 4 notches  visible on the guide between the belts.   Check it with the nozzle forward and with it back.   I've seen the tension differ between those positions.

]]> Sat, 19 Jan 2013 18:21:18 +0000 https://www.soliforum.com/post/9901/#p9901 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9899/#p9899 I printed and used Ian's belt tension gauges and one of the belts is tighter on the problem printer than on the non-problem printer.  I'm not sure what to do.  Loosening a belt to take care of a skip seems counter-intuitive

]]> Sat, 19 Jan 2013 18:08:08 +0000 https://www.soliforum.com/post/9899/#p9899 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9896/#p9896 I just tried printing something on that printer, and within a few minutes, there was a clanking noise and the print was off in the Y direction.  I checked the voltage on the Y  motor driver, and it was 0.515: I bumped it to 0.520, but that difference seems unlikely to be the problem.  I printed out Ian's belt tension gauge, but am not sure what the "right" tension is.

One of the guide rods seems to cause increases in resistance to movement when rotated in the "wrong" orientation.  I reoriented it, but see no way to keep the rod in the optimal orientation.

I tried to put the X and Y movements through their paces, using Repetier Host's Manual Controls, but I feel as if the movement is too slow.  My maximum speed in Slicer is 75 mm/s, or 4500 mm/min.  My setting in the RH configuration for Travel Feed Rate is 4800.  I would like to use the Manual mode to check things out, but in Manual mode all seems well.

I wonder if someone should create an X/Y torture test gCode file...

]]> Sat, 19 Jan 2013 16:58:57 +0000 https://www.soliforum.com/post/9896/#p9896 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9528/#p9528 When I move the carriage around in both the X and Y directions by tugging on the belts, there are no clanking noises.  Puzzling

]]> Tue, 15 Jan 2013 23:24:55 +0000 https://www.soliforum.com/post/9528/#p9528 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9281/#p9281 I tried to upload the (20 MB) movie here, but the site silently barfed.  Try looking at www.jonbondy.com/clanks.mov

]]> Sat, 12 Jan 2013 16:48:32 +0000 https://www.soliforum.com/post/9281/#p9281 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9188/#p9188 I'll try to shoot that video on Saturday.  It's been quite a week.

]]> Fri, 11 Jan 2013 02:24:24 +0000 https://www.soliforum.com/post/9188/#p9188 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9149/#p9149 If you record a short video, does it pick up the clanking sound you are talking about?

]]> Thu, 10 Jan 2013 15:04:08 +0000 https://www.soliforum.com/post/9149/#p9149 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9119/#p9119 If I run the printer manually, going back and forth by 10 mm in X sounds "normal", but when I do that in Y, I hear a clanking sound each way.  And yet when I grab the carriage (either with power on or off) I do not feel play pushing it forward and backward.  I'm not sure where the slop is.  If the belts were loose, wouldn't I feel that in my fingers?

]]> Thu, 10 Jan 2013 01:50:58 +0000 https://www.soliforum.com/post/9119/#p9119 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9110/#p9110 The belt tension gauge is probably the most expensive print I've done.  Unless you want to go slumming it with washers but I like my printer accessories to have a little class.  Maybe I'll replace the quarters with some gold Sacagawea dollar coins just because.

]]> Thu, 10 Jan 2013 00:07:03 +0000 https://www.soliforum.com/post/9110/#p9110 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9109/#p9109 On both of my printers, if you grab the extruder stepper motor and pull the back up gently, you can see that it can ride up and down.  This would could move the end of the nozzle I suppose.  I'm not sure how to evaluate X and Y backlash (that is, what procedures to use to create it, and what measurements to make to evaluate it).  I asked Solidoodle and they said they were actively working on how to assess and improve backlash.  So, I guess it's up to us.

]]> Thu, 10 Jan 2013 00:05:48 +0000 https://www.soliforum.com/post/9109/#p9109 <![CDATA[Re: Slic3r and/or printing anomaly]]> https://www.soliforum.com/post/9093/#p9093 I've printed out Ian's Belt Tension Gauge and finally found enough quarters but haven't used it yet.

]]> Wed, 09 Jan 2013 21:55:53 +0000 https://www.soliforum.com/post/9093/#p9093