Filament Spill Number 354, please help. (Page 2 of 2)

What's your print speed? It's hard to do PETG at much more than 30mm/sec. It doesn't flow as well as ABS or PLA.

260C is beyond the rating of the Lite6, and knocking on the door of PTFE breakdown.

So, whoever s in charge f the Wiki... Filament spill, possible causes include:
Extruder temp not what is indicated, not melting filament enough to extrude easily (even thouh some does come out).
Filament path must be straight, no jogs.
Idler bearing must contact filament/drive gear at 3 0'clock position.
Ensure just enough tension on the tensioner arm.
Check for clogged nozzle or barrel.
Verify drive gear is extruding 100mm of filament when 100m is called for. Adjust firmware to correct.
Also, verify the Z-stop to ensure bed is not blocking nozzle

Don't assume anything. Check everything.

The PETg looks nice. Good lookin Z axis, very little banding. And I haven't done the fine thread Z screw or slop nut yet either. It also doesn't require much heat on the bed.

Still printing away

Tim, you asked about print speed:

That is only accurate if embedded in the meat. Otherwise it is reading somewhere between the heater block and ambient, and at best it is reading the temperature of the surface of the heater block, not the inner area close to the nozzle.

Assuming you updated the thermistor table successfully, I'd put my money on the thermistor being accurate, not the meat thermometer.

About 45 minutes into my last print job it started spilling again. But, the temp had somehow dropped from 260 (indicated) to 225 (the default)/ So, it seems that temp is indeed the culprit. Now I need to go into Simplify3D and find the firmware setting dfor default e temo and set it to 265 (240 in reality).

Also, I have an idea about the big temp disparity. I epoxied my thermistor with a glop of JB Weld high-temp epoxy. I painted over the thermistor and around the two other sides of the corner of the eater block (XY and Z), probably a spot about the size of a pea. I think that is holding or reflectig heat back in and, indeed, causing a hot spot around the thermistor. Not a biggie, now that I see what is happening, but a heads up for anyone wanting to do the same.

I know, epoxying your thermistor is not the kind of thing we want to go recommending normally but if the idea should occur to others, they need to know why. That and, it IS epoxying your dang thermistor! 

Tim, here is the process setting. 3600 mm/min print speed. Looks like I could edit some of my other process settings to get optimal results. For example, this one thinks we're printing ABS.

3600mm/min is pretty fast for PETG, and is likely why you're having to crank the temperature. The Lite6 is rated to 245C, if you'd like to go higher then I recommend a v6.

Okay, so I made a new Process (Simplify3D) and lowered the temp to 245 and print speed tp 3000. (I'll lower and slower them both a bit at a time until I ht the sweet spot)

But I can't find the Process I just made. I've tried twice. both "Updating Process" and "Save As New". So, where'd it go?

I just checked, says its up to date.