1 Topic by Krythis

  • Krythis
  • Krythis
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  • From: Depew, NY
  • Registered: 2013-02-27
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Topic: E3D - ABS Print Temps

**Disclaimer ** Printed with E3D all metal hotend. DO NOT try this with the stock Solidoodle hotend.

Testing different extrusion temperatures (thing:35088) attempting to find a good temp for this Octave Green ABS. Up until now I haven't moved far from the 225 range, but seen a post of the RepRap forums that one user had to go to 270 for a good print. So figured I would see what would happen.

Each piece was printed in the center of the print bed heated to 90º. They were printed one after another 225-265, then 215 with .3mm layer height, 15% infill, skirt, and a 4 parameters minimum.

I'm surprised how little the extrusion temp seemed to affect this print. 215 has some warpage at the bottom, though this may be because it was the 6th print in the exact same spot with no hairspray added during prints. 245-265 were slightly harder to break. When blowing into the broken ends (4 parameters) 255-265 are much more air tight than the lower temperatures.

I'd be curious to know what temp ranges others are using for ABS from their new E3D hotends.

http://i.imgur.com/O1FRWBW.jpg
http://i.imgur.com/GPXAw3T.jpg
http://i.imgur.com/aPxezT5.jpg
http://i.imgur.com/PeiBxpD.jpg
http://i.imgur.com/gFbQQKL.jpg

Larger Images
http://i.imgur.com/O1FRWBW.jpg
http://i.imgur.com/GPXAw3T.jpg
http://i.imgur.com/aPxezT5.jpg
http://i.imgur.com/PeiBxpD.jpg
http://i.imgur.com/gFbQQKL.jpg

E3D-v4 Hotend, MK5 carriage with round plastic wire conduit , 3/16" tempered glass,  Well nut, SureStepr SD8825 1/32 Extruder Driver, PowerEdge 2650 500W PS, QU-BD heated bed, circuit board fan, hinged plexiglass enclosure with plastic tray top. Other than that mostly stock SD3

2 Reply by adrian

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Re: E3D - ABS Print Temps

You want to be careful with ABS at 265°C .. it starts putting out nasty stuff >260 ...

I tend to use 245 for some stuff, but 235 for the rest. PC needs 270-300, but is safe to that temp.

3 Reply by SanjayM

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Re: E3D - ABS Print Temps

adrian
I often run PLA at 280C with my E3Ds and a 0.6 (large orifice) nozzle. The reason for this is that you can print faster, a lot faster. Having an all metal hotend lets you achieve much faster melt rates, when you start running fast you actually hit the extruder melt rate limit before the XY motion limit in most cases. (I don't have an SD so can't tell you for sure)

The reason for this is that the temp of the nozzle is not necessarily the temp of the plastic, in fact in most cases it's significantly different, the filament heats as it flows through the nozzle and in most print-cases exits before reaching equilibrium.

One might be sailing a little close to the wind upping temps on ABS to get faster print rates, but if you're sensible about ventilation you're unlikely to have any issues.

Krythis
Really interesting testing - following on from what I said above, it would be interesting to see how strength varies with speed at a constant temperature - as speed of printing effectively modulates the temperature of the extrudate.

You're going to run into issues and get false results printing those tall thin test pieces I expect, due to minimum layer time issues, melty printing etc. Maybe go for a larger test object so minimum layer time is not a problem?

Really interesting stuff, would really like to see results of more testing. I would also like to know about strength variations with different size nozzles and trace widths. 0.25-vs-0.4-vs-0.6 I hypothesize intuitively that the 0.6 would be stronger.

If you do the testing with speed variation, share your results publicly here and want to do the testing with nozzle variations then I will send you the free extra nozzles if you don't already have them. I don't think anyone has done proper testing of these multiple variables, and it would be valuable information for me, but also for the 3DP community in general. Let me know what you think!

I Design/Sell the E3D all-metal hotends. My company is called e3d-online - you can buy at www.e3d-online.com

4 Reply by adrian (edited by adrian 2013-08-05 04:51:14)

  • adrian
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Re: E3D - ABS Print Temps

Yeah,  the OEM extruder stepper and under spec x axis are the limiting speed factors here. A. 6mm nozzle obviously can do larger volume so would help, and I have a bunch coming in my latest order,  but the biggest limitation on the SD is deceleration once you start going fast.. And the direct drive extruder running out of puff over 50mm/s, but the. 6mm will give you more filament for that speed so should cope with higher print speeds as long as you don't want the. 7mm walls smile

If you want to pop a full set of nozzles in my current order, happy to verify the veracity of the above for each nozzle size

Oh - and yes I know the filament temp != melt zone temp when you are printing.. but based on the number of people that seem to manage to get their *standard* hot end clogged and bake in ABS... obviously lots of people are hitting set points and sitting there not printing or doing other equally 'non-usual' things... so hence my reminder/warning to others to not muck around with ABS >265°C unless you really know what you are doing and are aware of the issues smile

5 Reply by DePartedPrinter (edited by DePartedPrinter 2013-08-07 19:31:21)

  • DePartedPrinter
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Re: E3D - ABS Print Temps

Glad somebody did this test. I have ran ABS at about 235 and nylon at 260 with the E3D

SD2 with E3D, SD Press, Form 1+
Filastruder
NYLON (taulman): http://www.soliforum.com/topic/466/nylon/