Converting old TAZ 4 extruder to flexystruder

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SeeDiph
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Re: Converting old TAZ 4 extruder to flexystruder

Post by SeeDiph » Tue Mar 17, 2015 9:12 pm

I did something something like this with my old flexy and a new hex printhead. No drilling, machining, etc. Just a little tinkering and rebuilding.

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dustMason
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Re: Converting old TAZ 4 extruder to flexystruder

Post by dustMason » Thu Mar 19, 2015 12:15 am

Thanks dutchhome! First semiflex print underway right now... assembly was pretty easy and I remembered to flash the firmware!

So far, this is looking OK:
  • 230º extruder / 0º bed
  • 30mm/s base speed
  • 2mm retraction distance
  • PET surface (my PEI is removable)

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dutchhome
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Re: Converting old TAZ 4 extruder to flexystruder

Post by dutchhome » Thu Mar 19, 2015 5:53 am

Nice! I still haven't been able to try mine yet :(

I finally received the small crimp pieces to attach the new heating resistor just to find out my wife threw away the old insulating tubes.. Grr..

It seems like I'll eventually have enough extra parts to start my own production run :)
Lulzbot TAZ 4.1
Upgraded to Hexagon Extruder
Converted old extruder to Flexystruder 1.1

kmanley57
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Re: Converting old TAZ 4 extruder to flexystruder

Post by kmanley57 » Thu Mar 19, 2015 7:04 am

Yeah I converted a AO-100 extruder into a flexy about 6 months ago for this nice guy I know that works for Fenner drives and did some testing on this filament they were trying out! :D Had to use what is available at the time, and did not have access to a unused Taz or Mini! :cry:

Just wish I could get my prints to come out even half as good as his do!
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mr_tim34
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Re: Converting old TAZ 4 extruder to flexystruder

Post by mr_tim34 » Thu Mar 19, 2015 7:20 pm

I've got the later budaschnozzle and it doesn't seem to have any problem printing PLA so I don't think I'll have a problem with leaking at the top of the hot end. On the flexible filament profile they point to a .5mm nozzle here:
https://www.lulzbot.com/support/taz-cura-profiles
I saw the Taz 5 firmware update for use with the Flexy struder and am also wondering if I use this for my TAZ 4 with the Hexagon hot end I can use either extruder with one firmware. We'll have to wait and see.

TiM

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dutchhome
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Re: Converting old TAZ 4 extruder to flexystruder

Post by dutchhome » Thu Mar 19, 2015 9:15 pm

I believe the TAZ 5 Flexy firmware is for the Budaschnozzle. This is why the Flexystruder page says that the firmware isn't needed on the TAZ 4. Since the TAZ 5 has the hexagon hotend it has a different power profile and thus requires a firmware update. I learned this the hard way.. I'm still waiting to try my upgraded hotend after trying to use the Flexy conversion with the TAZ 5 firmware (not the TAZ 5 Flexy firmware).
Lulzbot TAZ 4.1
Upgraded to Hexagon Extruder
Converted old extruder to Flexystruder 1.1

dustMason
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Re: Converting old TAZ 4 extruder to flexystruder

Post by dustMason » Thu Mar 19, 2015 11:07 pm

I can confirm dutchhome's last comment. If you open up the configuration.h file in the flexy/taz 5 firmware, it is noted clearly that the values in it are for the budaschnozzle extruder and not the hexagon.

Just to be totally clear – if you have a taz 4 with an upgraded hex toolhead, you need to switch your firmware to the flexy/taz5 firmware to use the flexystruder!

KosmoPi
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Re: Converting old TAZ 4 extruder to flexystruder

Post by KosmoPi » Fri Mar 20, 2015 12:54 pm

Stupid question, Are the printed parts hard to print? Can they be PLA, (do any of them need to be flexible?)..

I am pretty excited by this project. Once I get the new extruder I would love to convert it as well. If things quiet down, I might be doing this sometime in April. I will try to see if you have any spare parts by then.

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dutchhome
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Re: Converting old TAZ 4 extruder to flexystruder

Post by dutchhome » Fri Mar 20, 2015 1:52 pm

You only need to print one part - the Flexystruder body. The other parts (gears, bracket, etc) can be salvaged from the old extruder. My guess is that it should be printed with ABS. If you want, I'll print out the body for you (choose between black, white, red, and blue) and install the PTFE tube and heatset insert and send it all to you. Then all you need to do is tear down the old extruder and rebuild it with the Flexy body.
Lulzbot TAZ 4.1
Upgraded to Hexagon Extruder
Converted old extruder to Flexystruder 1.1

oppfinnarn
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Re: Converting old TAZ 4 extruder to flexystruder

Post by oppfinnarn » Wed Mar 25, 2015 10:03 am

A thought..

Would it work to use a new heater resistor (from the new hexagon hot end) in the old budaschnozzle, in order to avoid flashing the firmware every time I change struder? If so, what's the actual part number? Can't find anything in the developer section on the new hot end..

Any Lulzbot staff out there that could comment on this?

Thx!

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