Got my socks on!
I got my silicone socks today and put one on the printer. It fit nicely (I did remove one tie wrap to loosen the wires) and I wrapped the top of it with 1/4" kapton tape to stabilize it. I was too excited to try it out that I forgot to take any pictures! 😳
It's printing now and is working great. I tried 100% fan and got no noticeable drop in temperature. I'me hoping that the setup leads to mare stable temps in the hotend. So far it does look like the MadeSolid PET+ likes it very much. The top layer is smoother than I have seen before.
Bill W
"Even old dogs can learn new tricks!"
Re: Got my socks on!
Bill
I found that I had to re-tune the heater PID after installing the sock.
This is the start GCode I have added:
M301 P24.24 I1.93 D75.95 ; set PID for extruder heater with sock
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Got my socks on!
I was going to look into that. There is a thread here about how to do that but I haven't searched for it yet.
Bill W
"Even old dogs can learn new tricks!"
Re: Got my socks on!
William.w2... great to hear! Looking into getting the hotend kit with these as I got the old heatblock 🙁 .
As for the rest of you! PID?!
*Does google search: Pelvic Inflammatory Disease?! 😕 😆 Nah!
*Does google search: REPRAP GCODE guide! Great 🙂
Pnnn proportional (Kp)
Innn integral (Ki)
Dnnn derivative (Kd)
Wah?!
P: Interprets a negative P term as indicating that bang-bang control should be used instead of PID (not recommended for the hot end, but OK for the bed heater).
I: Integral value
D: Derivative value
*woosh straight over my head (and out the window)... obviously something for all the mechanics/engineers (or just made up words 😆 )
I think I'll let you guys sort this one out!!!
Re: Got my socks on!
From the M303 I got:
Kp: 20.05
Ki: 1.34
Kd: 75.15
Bill W
"Even old dogs can learn new tricks!"
Re: Got my socks on!
Bill
The firmware defaults are: 40.925/4.875/86.085 and are very different from the socked hot end.
So you need to include a start GCode line:
M301 P20.05 I1.35 D75.15
I have noticed that when pre-heating the extruder power is reduced when the temperature approaches the set temp and it does take longer to get the last few degreen now.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Got my socks on!
William.w2... great to hear! Looking into getting the hotend kit with these as I got the old heatblock 🙁 .
Hi 3Dlight,
Is there a new model/version of the hotend out ? Mine was also shipped without sock but i bought them seperatley. However if the sock shipping with the hotend does also indicate a new hotend version, i might want to switch that out too. (If it is possible with the "old" mounts from prusa.. )
What are the new features of the new version of the hotend ?
Thanks
Re: Got my socks on!
Manuel, you can tell if you have the new version by looking at how the temperature probe (with the small wires towards the front of the heater block) is mounted. The new version uses a cartridge that is set in place with a very small screw that goes up from the bottom of the block. If you have this then you can see it in the photos here: http://e3d-online.com/E3D-v6/Metal-Only/v6-1.75mm-Universal-Metal-Only The heater goes into the hole that has the slot and the probe goes into the smaller hole. The cartridge probe is much more accurate and harder to break.
So if you have the newer block then the sock will fit.
Bill W
"Even old dogs can learn new tricks!"
Re: Got my socks on!
My Mk2 came with the old heater block and thermistor, so I ordered the 'Block & Sock' upgrade kit. When I installed it I couldn't get the new the thermistor to work, turns out one of the connecting wires had broken off and was only making partial contact.
I'm pretty sure this was down to me trying to squeeze in the Thermistor's Molex connector behind the extruder assembly - the connector is too big to sit in the slot with the heater wire at the bottom, so it sat outside the block. It was too tight a fit and it looks like it broke the thermistor cable at the cartridge end.
Those of you with the sock, how are you arranging your cables?
Re: Got my socks on!
I was able to slip the sock under the thermistor cable with my tweezers. I did undo the cable tie that holds the heater and thermistor cables to the back of the print head. Then I wrapped the top of the sock with one round of 1/4" kapton tape just to be sure it stays secure.
I'm running my first print after running the PID calibration and the temperature isn't varying by as much as one degree! It was running +1 to -3 degrees before.
Bill W
"Even old dogs can learn new tricks!"