E3D V6

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Tim
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Re: E3D V6

Post by Tim » Wed Oct 22, 2014 10:37 pm

MMcKenzie wrote:Printing PET+ with pretty good success. still learning tho, and I almost have the BLOBBING ON THE NOZZLE cleared up...
When you've got that one nailed, I want to know the secret. With the cone part of the nozzle being so short, the PET+ really loves to stick to the underside of the heating block.

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jdacal
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Re: E3D V6

Post by jdacal » Mon Dec 29, 2014 10:25 am

I finally got around to installing a e3D V6 but I think I'm not entirely clear about using the 24v heater and also the thermistor.

Are you guys keeping the M2 Thermistor or using the one supplied with the e3D? Reason I ask is that if I use the e3D hotend thermistor the bed also uses a thermistor, would I need to change that one as well? I'm guessing possibly yes as I am getting issues with the bed temperature now. I did change the thermistor type in the firmware as detailed in the instructions but am thinking that setting also applies to the bed thermistor?

I purchased a 24 volt heater for the hotend, shouldn't have to do any firmware changes there other than PID, correct?

Thanks
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jimc
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Re: E3D V6

Post by jimc » Mon Dec 29, 2014 2:31 pm

You dont need to do anything with the bed thermistor. The two are independent and have nothing to do with one another. You want to use the e3d thermistor and he firmware is set to i think #5 temp table....which you said you already did so that should be good. If your old heater for the hot end was 24v and the new one is the same then just a pid should be all you need. Once you get everything working let me know and ill give you profiles for it

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jdacal
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Re: E3D V6

Post by jdacal » Mon Dec 29, 2014 7:27 pm

Thanks Jim. I have it working and ran the PID twice, but my temperatures are fluctuating both on the bed and the hotend.

On the hotend its varying + or - about 4 degrees, going to try running PID today again.

On the bed its hitting 110 but then slowly drops down to about 98 and stays there. If I set it at 90 it slowly drops to about 96 and stays there. I read there is a PID procedure for the bed as well, going to try that later today as well to see if it resolves it. Not sure why the bed would have changed unless I have a wire starting to go on me.

Even with the above I'm getting some great prints on ABS using pretty much the same profiles from the old hotend, with your profiles they should be fantastic.

EDIT: I meant to say that it drops to about 88 not 96 on the bed.
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Re: E3D V6

Post by jimc » Mon Dec 29, 2014 11:15 pm

huh, yes strange about the bed. i cant really think of any reason the bed would be affected. it could just be coincidence that you are having a wire go at about the same time as the e3d change. i just had to change my bed thermistor wire out. i got a new thermistor from MG thinking that it was finally going but it was the wire. even though my bed wires move in very smooth arcs, i guess a year and a half of going back and forth finally did it in. buts just as you say though. my bed was dipping down then jumping back up. the temp jumping would probably be quick though if the wire was going. it might dip down a few deg in just a second or two then jump back up quickly. so quick that you know it couldnt possibly heat up that quick. those would be signs of a wire or thermistor going.

when i switched to my e3d i did have to go in and turn down my MAXPID setting otherwise it would ramp up my temp so quick that it would overshoot so far i couldnt do an auto tune or it would make the autotune a bit inaccurate like your getting. i have a 12v heater though on a 19v machine. if you are 24 then that might not be necessary but who knows. right now i stay within the 1 deg mark on the bed and hotend.

here are my processes. i would just copy my general settings rather than loading them since i am still on a 19v machine. loading them may screw with how your fans and other things work. some of these are tuned pretty well. other will be a good start point for you to tweak. many of the retractions settings i will change a bit from print to print so these are just to get you goin and close.
e3d processes.zip
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jdacal
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Re: E3D V6

Post by jdacal » Mon Dec 29, 2014 11:52 pm

Thanks for the profiles Jim, much appreciated.

I'll run the PID's tonight again and see if things improve on the temperatures. Going to try that bed PID I read about. I'm not getting sudden drops on the bed. Just a gradual drop and then it stays there.
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Re: E3D V6

Post by Lateralg » Tue Dec 30, 2014 7:57 pm

[quote="jdacal"]On the bed its hitting 110 but then slowly drops down to about 98 and stays there. If I set it at 90 it slowly drops to about 96 and stays there. I read there is a PID procedure for the bed as well, going to try that later today as well to see if it resolves it. Not sure why the bed would have changed unless I have a wire starting to go on me.

Have you closely examined the connection of the power lead to the RAMBo? My connection block was destroyed by marginal insertion. Led to replacement of RAMBo. ($$$)
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jdacal
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Re: E3D V6

Post by jdacal » Fri Jan 09, 2015 4:27 am

Anyone have a ballpark figure on what the cost is for the 24v M2 heater and extruder wiring harnesses?

Looks like I finally figured this out. Weird stringing issues led me to try the E3d V6 I had sitting around, and after installing it I started getting the temperature fluctuations in both the bed and nozzle heater. Anyway to make a long story short it looks like by coincidence both harnesses have gone on me. I was able to pinpoint it by moving and squeezing the harnesses as the printer was running last night and in both heaters I found spots on the harnesses that brought temperatures to normal as I squeezed and twisted them around. On the nozzle connector I measure the voltage and it would jump to 24volts as I move the harness. Otherwise it dropped to 16v.

I've put a lot of miles on this thing since I purchased it so I'm not complaining. But wondering what the price is in case I want to order additional spares.
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jimc
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Re: E3D V6

Post by jimc » Fri Jan 09, 2015 4:31 am

i really dont think they cost alot. best thing to do really is just send an email to karen. they cant be much at all. i just replaced my extruder harness. the wire on the green pin going into the stepper was broken at the white plug and was arcing. that was only the extruder one though. no heater or thermistor harness.

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jdacal
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Re: E3D V6

Post by jdacal » Fri Jan 09, 2015 4:57 am

Yes I was going to give them a call tomorrow. I tied the heater harness off as you've suggested in other posts, but I think I did it too late it was already damaged.
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