Search found 1864 matches

by jsc
Sat Feb 25, 2017 7:38 pm
Forum: General Discussion
Topic: Extruder Acceleration - Holy Crap!
Replies: 29
Views: 59052

Re: Extruder Acceleration - Holy Crap!

zemlin explained jerk above, but check out this description from the Repetier manual: https://www.repetier.com/documentation/repetier-firmware/rf-installation/ Search down for "Jerk control". If the change in velocity is below MAX_JERK, the planner just assumes it can make that jump instantaneously,...
by jsc
Fri Dec 30, 2016 3:03 am
Forum: Tech Support
Topic: Odd issues on taller cylindrical parts
Replies: 4
Views: 6268

Re: Odd issues on taller cylindrical parts

Every perimeter of every layer is concentric, so there will be one seam per perimeter, although of course any perimeters that aren't exposed to the outside or inside won't be visible. To precisely locate a position in S3D or other slicer, you can use a model of a thin cylinder or square, move it aro...
by jsc
Mon Dec 12, 2016 8:04 pm
Forum: Software
Topic: OctoPrint update 1.2.10 -> 1.3.0 failing
Replies: 5
Views: 10203

Re: OctoPrint update 1.2.10 -> 1.3.0 failing

I had an update failure. Look in the octoprint log, it may tell you what went wrong. The log is, for me, in ~/.octoprint/logs/octoprint.log. For me, there was an existing file that would have been overwritten by the merge: tests/users/__init__.py. Remove any such files and try again.
by jsc
Thu Dec 08, 2016 10:00 pm
Forum: Software
Topic: Audodesk Print Studio Settings
Replies: 6
Views: 9993

Re: Audodesk Print Studio Settings

I'm always interested to see what Autodesk has been up to, and your mention of Print Studio intrigued me, so I went to find it. You can still get it, but it appears to be part of their Spark platform, which is shutting down in a month, so I'm not sure it's worth investigating.
by jsc
Tue Dec 06, 2016 7:53 pm
Forum: Other (off topic)
Topic: Stepper/servo controllers
Replies: 0
Views: 20804

Stepper/servo controllers

Just saw this in my email: http://www.digikey.com/en/product-highlight/t/trinamic/stepper-motor-servos?WT.v_sub=4706380 Integrated driver for controlling stepper servos with third-order S-curve acceleration and close loop feedback. Like TinyG, but using servos. Someone years ago upgraded the stepper...
by jsc
Wed Nov 16, 2016 4:08 am
Forum: General Discussion
Topic: Yet another 3dhubs win this year
Replies: 4
Views: 8760

Yet another 3dhubs win this year

Saw this on Facebook: https://www.3dhubs.com/3d-printers. Yet another year of winning for the M2. When you click through, the first thing that caught my eye was that under Cons was "no dual extruder". That's funny, I wonder why mine appears to have two extruders.... I'm also disappointed that custom...
by jsc
Wed Nov 09, 2016 11:14 pm
Forum: General Discussion
Topic: Timelapse suggestions
Replies: 3
Views: 6329

Re: Timelapse suggestions

You can try mounting a lightweight camera to the bed, but you can't do that with a printed part because the bed gets hot, plus you may have issues avoiding it. If you have a camera mount (I have a side mount design on thingiverse), you can in theory put in some gcode at the start of every layer to m...
by jsc
Fri Nov 04, 2016 5:54 am
Forum: Tech Support
Topic: Severe warping on large print
Replies: 9
Views: 13943

Re: Severe warping on large print

If this is an object of your own design, you can also try incorporating some anti-warp features. I've seen people experimenting with accordioned walls to reduce the pulling forces, or you could try introducing a vertical slit in the walls on both sides of a corner.
by jsc
Thu Oct 27, 2016 8:36 pm
Forum: Tech Support
Topic: Fan connections... variable speed fan not working
Replies: 10
Views: 15114

Re: Fan connections... variable speed fan not working

I did some investigation into bed fan control in the early days of this forum. Marlin controls the fan speed using PWM, turning the current to them on and off at a very fast rate. Turns out fans aren't just simple DC motors these days, and some don't take very well to this kind of control. Slowing d...
by jsc
Thu Oct 27, 2016 6:53 pm
Forum: How-to/Guides/Tips
Topic: How To - Pausing a print at a specific layer. (Simplify3D)
Replies: 37
Views: 120325

Re: How To - Pausing a print at a specific layer. (Simplify3

The pause gcode depends on the host software you are using. If you are using S3D or OctoPrint, M0 is correct. If you are using Pronterface or Repetier Host, it is @pause. viewtopic.php?f=3&t=1584