#linuxcnc-devel Logs

May 03 2017

06:09 AM nos: How does LinuxCNC's OpenGL plot get rendered?
08:08 AM -!- #linuxcnc-devel mode set to +v by ChanServ
08:54 AM kwallace2: nos, in case you read back, very loosely, a package called Gremlin is the interface between the machine and OpenGL. Try a search for "LinuxCNC Gremlin" to get links you can use to piece together how it works. Here is a link to some notes covering some issues I had: http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Gremlin .
09:34 AM cradek: the design of the linuxcnc interpreter is that it calls "canonical" commands such as STRAIGHT_FEED and ARC_FEED etc. as its output. This API can be used to cause motion, or to generate opengl primitives, or whatever else you need.
10:04 AM nos: kwallace2: Thank you very much!
01:16 PM skunkworks_: loh
04:30 PM JT-Shop2: jepler: nice looking ABS part, I've never tried ABS just PLA and PETG which I've never got to print right yet
04:33 PM jepler: JT-Shop2: I have esun petg which I print at 75/245 and at about 25mm/s (not sure about the speeds). Painter's tape and glue stick again.
04:33 PM jepler: sometimes it's a stringy mess, usually it's fine
04:35 PM jepler: 25mm/s is about half my speed with PLA
04:37 PM jepler: actually my cura petg cfg seems to be 40mm/s
04:37 PM JT-Shop2: hmm the print temperature is higher than I've tried and I didn't slow down the speed
04:37 PM jepler: part cooling fan on, which I think is the recommendation
04:38 PM jepler: PETG also seems a lot more sensitive to bed leveling. too low and the PETG balls up on the nozzle instead of sticking to the table.
04:48 PM JT-Shop2: I've only used Atomic filaments and they seemed ok
05:03 PM jepler: hm the "ABS Flag" has a way of working itself slowly out of the fan duct. no surprise there but it makes me worry about leaving it in for this lengthy print if I'm planning to leave :-/
05:09 PM jepler: no reason this part is in ABS, so I'll just restart with PLA and relax a little bit
05:18 PM JT-Shop2: can you unplug the fan?
05:31 PM jepler: no, the only plug is in the bottom of the machine; and in any case it's also blowing on the heatsink that serves as the heat break in the hotend so you don't want it disabled
05:32 PM jepler: If I wanted to do ABS exclusively I'd probably be best off printing a fan shroud without the part-cooling duct at all
05:35 PM jepler: it
05:35 PM jepler: but it's more that I'm thrilled I can do ABS at all, than that I plan to switch to it primarily or exclusively
05:46 PM JT-Shop2: ah yea the hot end fan must run all the time
05:46 PM JT-Shop2: I put separate part cooling fans that I can turn on or off
06:11 PM jepler: .. corner cutting to hit a $200 retail price ..
08:42 PM KGB-linuxcnc: 03Chris Morley 05qt5vcp_master ce53f49 06linuxcnc 10lib/python/hal_glib.py hal_glib -add a periodic signal * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=ce53f49
08:42 PM KGB-linuxcnc: 03Chris Morley 05qt5vcp_master 7eb6f36 06linuxcnc 10share/qtscreen/skins/qt_cnc/qt_cnc_handler.py qtscreen -use new periodic signal for error messages * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=7eb6f36
08:42 PM KGB-linuxcnc: 03Chris Morley 05qt5vcp_master e8478d3 06linuxcnc 10lib/python/qtscreen/notify.py qtscreen/notify -fix callback buttons * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=e8478d3