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Topic: PEEK insulator broke... How bout wood?

In an effort to make sure my new qu-b hot end was firmly connected to the PEEK barrel, I ended up breaking the barrel in two after one turn too many. After a futile attempt to find only a peek barrel (instead of whole hot end) I am thinking about just using wood for the barrel. Or just giving up and buying a new hotend. Any suggestions?

Grand Rapids, Michigan
SD2 with Sanguinololu board, glass bed mod, E3d_v5 bowden version hotend (currently direct drive), Lawsy Mk5 jigsaw replacement, octopi printserver, drv8825(tiny troubles)

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Re: PEEK insulator broke... How bout wood?

Hi, 

I've been running my RepRap Prusa with a bamboo based hot-end off and on since 2011.  I wrote up about it at the time(Gah!, can't add link because of new account sad  have a search on google for "garyhodgson bamboo" and it should be the top link )  I say off and on because each time I went back to PTFE or PEEK (to try a new hot end for example) I ended up reverting back to the bamboo, as I find it jams a lot less, is easier to work with, and is in plentiful supply (I harvested mine from our living room plant smile

I guess the usual safety considerations should be taken into account - I don't have my machine running unintended for example.


Best of luck,
Gary

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Re: PEEK insulator broke... How bout wood?

coleke wrote:

In an effort to make sure my new qu-b hot end was firmly connected to the PEEK barrel, I ended up breaking the barrel in two after one turn too many. After a futile attempt to find only a peek barrel (instead of whole hot end) I am thinking about just using wood for the barrel. Or just giving up and buying a new hotend. Any suggestions?

Solidoodle sells the PEEK by itself.

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Re: PEEK insulator broke... How bout wood?

So does Makergear but they seem to be out of stock.

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Re: PEEK insulator broke... How bout wood?

Thank you Gary! I like the renewable alternative! Did you harvest it from a young plant? There aren't any sources for bamboo cylinders here other than baby house plants from Target. Maker gear's site is indeed out of peek insulators. I think I will try this before spending the $27 + S&H for the solidoodle PEEK.

Grand Rapids, Michigan
SD2 with Sanguinololu board, glass bed mod, E3d_v5 bowden version hotend (currently direct drive), Lawsy Mk5 jigsaw replacement, octopi printserver, drv8825(tiny troubles)

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Re: PEEK insulator broke... How bout wood?

coleke wrote:

Thank you Gary! I like the renewable alternative! Did you harvest it from a young plant? There aren't any sources for bamboo cylinders here other than baby house plants from Target. Maker gear's site is indeed out of peek insulators. I think I will try this before spending the $27 + S&H for the solidoodle PEEK.

Coleke, were you actually able to view his site? I tried clicking on the link several times through google searches, but every time I get a message saying his servers are taking too long to respond. If you were able to view his site could rehash what it says there? I too am interested in this, and my school in plentiful with bamboo on campus.

Thanks

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Re: PEEK insulator broke... How bout wood?

Gary, if you don't mind, I am pasting a section from your site below:

"A piece of bamboo that cut from a plant last year was used, but one could find something suitable and cheap from a garden center.    The key is to find bamboo thick enough that will allow a hole wide enough to hold your nozzle to be drilled in.
The size of an individual segment seemed to work well, and simply cut at the first knuckle.
A 3mm hole was drilled the length of the piece for the feedstock entrance, and then the nozzle end was widened by 5mm part of the way down (however far the nozzle should be screwed in).
The feedstock entrance was reamed slightly to provide a wider opening for the feedstock to find its way.
Wetting the bamboo makes it slightly flexible, so before screwing in the nozzle the entrance was soaked under a tap. This may or may not really help, but so far the nozzle in the test pieces have remained tight and secure.
Several means of attaching the hot end to the extruder were explored. Shown here are several T-bar approaches, and one which utilises the non-symetric nature of the bamboo to create a type of twist-lock mechanism."

Vince7c95, if you can get http://garyhodgson.com/reprap/2011/05/b … k-or-ptfe/ to load on a different system, there is a great write-up here with pictures.

I attempted to do this with bamboo stalk from home depot, and the qu-bd hot-end. Every section that was thick enough to fit the mk4 extruder had too big  of a hollow area to press fit the nozzle barrel. I ended up sticking a smaller diameter piece inside a larger one to fit, but this was a mistake; my extruder nozzle was simply pushed out by the filament. Re-reading the above link, I realized I needed something to hold the hot end up, such as what the original, very tedious to remove hot end mount from Solidoodle provided. I tried attaching a metal angled piece between the aluminum block and an m6 nut on the barrel, then drilling out two holes so this assembly would fit on the quick release pegs (of Lawsy's mk4). PLA + Metal Heatsink hotend holder = not good.  Let me know how your attempts go, as I am very anxious to get an alternative hot end up and running.

Grand Rapids, Michigan
SD2 with Sanguinololu board, glass bed mod, E3d_v5 bowden version hotend (currently direct drive), Lawsy Mk5 jigsaw replacement, octopi printserver, drv8825(tiny troubles)

8 (edited by jefferysanders 2013-03-24 16:50:52)

Re: PEEK insulator broke... How bout wood?

I have access to at least 1 sqare acre of bamboo grown organically here on my parents land in Texas...if anyone needs some let me know! It's fully self-replenishing now after over 20 years and no matter how hard we try to eradicate it, it persists...(I could literally start a bamboo peek factory...do you think there is a market?)