Dual Extrusion at AOHQ

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jrobbins11
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Joined: Tue Mar 24, 2015 3:43 pm

Re: Dual Extrusion at AOHQ

Post by jrobbins11 » Wed Jun 03, 2015 9:25 am

Reading up on all the progress with y'all's dual extruder. Pretty cool stuff. I was wondering... have y'all considered making mounts to place somewhere on the frame of the printer (one of the rails on top maybe?) and moving the extrusion motors there to get them off of the print head set up? An idea similar to what the Ultimaker (2?) has so that y'all can reduce a bunch of weight off of the whole set up to get some higher speeds, but still keep sharper edges by not throwing all of that extra weight around? Just an idea, I'm not sure how plausible it would be with the open design of the TAZ...

MakerDude
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Joined: Wed Jul 22, 2015 9:21 am

Re: Dual Extrusion at AOHQ

Post by MakerDude » Thu Aug 27, 2015 6:46 pm

I made a dual all metal hot end tool head for my Taz 5. You can see it here: http://www.thingiverse.com/thing:987570

So far, I've only printed the one dice.

I still have to fine tune it. I noticed that when a job starts and the extruders are primed, When extruder 2 is primed, it moves slowly, and the print surface also moves. After that, it works normally. Does anybody have any idea why that is happening?

MakerDude
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Joined: Wed Jul 22, 2015 9:21 am

Re: Dual Extrusion at AOHQ

Post by MakerDude » Tue Sep 01, 2015 5:16 am

Never mind -- I fixed it.

mushoo
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Joined: Wed Jul 16, 2014 1:31 pm

Re: Dual Extrusion at AOHQ

Post by mushoo » Tue Sep 01, 2015 5:34 am

Mind telling us what the problem was, and how you fixed it? Useful if someone else comes across this later.

MakerDude
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Re: Dual Extrusion at AOHQ

Post by MakerDude » Tue Sep 01, 2015 8:34 pm

It appears to be an issue in the TAZ 5 firmware. I checked the pin settings and variables in pins.h, and they all looked good. I couldn't find anything obvious wrong with it when I looked through the code.

I decided to fall back to the TAZ 4 firmware as a test. After making adjustments for my toolhead, it appears to be working beautifully, so I'm using that.

I successfully printed a nice 2 color frog. You can see a picture of that in process by following the link above. The frog printed very nicely.

MakerDude
Posts: 5
Joined: Wed Jul 22, 2015 9:21 am

Re: Dual Extrusion at AOHQ

Post by MakerDude » Sun Sep 20, 2015 4:05 am

It appears that the problem I posted about earlier occurs when I hard code the dual extruder offset into the firmware.

I had a problem with Cura ignoring my offset settings during slicing, so I coded the settings into the firmware on the taz 4 firmware that I have been using, and was able to duplicate the issue.

Does anybody have any idea why this is happening? Code below.

Thanks,

David

// Offset of the extruders (uncomment if using more than one and relying on firmware to position when changing).
// The offset has to be X=0, Y=0 for the extruder 0 hotend (default extruder).
// For the other hotends it is their distance from the extruder 0 hotend.
#define EXTRUDER_OFFSET_X {0.0, -0.30} // (in mm) for each extruder, offset of the hotend on the X axis
#define EXTRUDER_OFFSET_Y {0.0, -48.6} // (in mm) for each extruder, offset of the hotend on the Y axis

brazen521
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Location: Boston, MA

Re: Dual Extrusion at AOHQ

Post by brazen521 » Mon Sep 28, 2015 7:59 pm

Hey Lulz guys, are the only machined parts on this the lower bracket, hex mount plate, and the corner pieces on the bed? Any idea how final of a design that lower bracket is? I'm considering biting the bullet and making my own because I have a few projects that I could really use dissolvable supports for, but I no longer have access to a CNC mill so I'll have to pay someone else to do it and am hoping to avoid a bunch of expensive revisions. ;)

Of course looking at the BOM it looks like you ordered 500 sets, so it must be somewhat finalized.

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nickp
Aleph Objects | LulzBot
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Re: Dual Extrusion at AOHQ

Post by nickp » Thu Mar 10, 2016 10:25 am

Hello all,

Here is a couple of pictures of the V2 Dual Extruder and the V2 FlexyDually.
flexydually_v2_TNPC6Em.png.400x300_q85_crop_upscale.png
flexydually_v2_TNPC6Em.png.400x300_q85_crop_upscale.png (79.43 KiB) Viewed 2660 times
dual_extruder_v2.jpg.400x300_q85_crop_upscale.jpg
dual_extruder_v2.jpg.400x300_q85_crop_upscale.jpg (27.88 KiB) Viewed 2660 times
Nick

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piercet
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Re: Dual Extrusion at AOHQ

Post by piercet » Thu Mar 10, 2016 11:08 am

brazen521 wrote:Hey Lulz guys, are the only machined parts on this the lower bracket, hex mount plate, and the corner pieces on the bed? Any idea how final of a design that lower bracket is? I'm considering biting the bullet and making my own because I have a few projects that I could really use dissolvable supports for, but I no longer have access to a CNC mill so I'll have to pay someone else to do it and am hoping to avoid a bunch of expensive revisions. ;)

Of course looking at the BOM it looks like you ordered 500 sets, so it must be somewhat finalized.
I-T-W.com had a few of the blemished condition brackets available. They've been out fo stock for a little while, but they may get more in. You can't have mine though!

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