Crazy idea, halogen induction cooker drying + annealing?
 
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Crazy idea, halogen induction cooker drying + annealing?  

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spark
(@spark)
Reputable Member
Crazy idea, halogen induction cooker drying + annealing?

Howdy folks,
So I've got a ton of mods backlogged because of a shortage of Noctua fans so in my bumbling on the intertubes, found a relatively cheap induction cooker. Goes to 11! actually 65°C to 246°C. Digital timer, halogen based induction heating, all glass "cooking" volume construction. Can fit 1 kilo roll well, maybe even a 2 kilo. Definitely big enough to anneal anything I'd make with my MK2s, I don't know thermodynamics and or am proficient enough with material sciences, to guess but I think it could work.

Just so you understand, comments like "yeah, give it a shot and let us know..." is not helpful, funny but not helpful.
Let me know guys, if this works, we might have a great cheap accessory for our Original Prusa printers!

MK2S kit owner since 8/15/2017

Postato : 25/10/2017 5:39 am
Jim Cook
(@jim-cook)
Trusted Member
Re: Crazy idea, halogen induction cooker drying + annealing?

Help me understand what this device will be used for. Drying the filament.... I understand and understand the importance of doing this. Drying of all your filament should bring more consistency to your printing process.
Now annealing. I've done annealing of steel. But I don't understand the proposed annealing of plastic filament. What is involved and what end result are you trying to achieve?
Thank you.

Postato : 25/10/2017 12:18 pm
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: Crazy idea, halogen induction cooker drying + annealing?

The only thing I would be concerned about would be "hot spots" from that type of heating.

A fruit dryer (like this: http://www.ebay.co.uk/itm/Beper-Fruit-Dryer/152438066308?epid=1492058993&hash=item237e044c84:g:6O0AAOSwdGFYpGiq ) seems to be the best idea so far; give the cooker a shot and let us know if this it's any better. 😉

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…

Postato : 25/10/2017 1:30 pm
spark
(@spark)
Reputable Member
Topic starter answered:
Re: Crazy idea, halogen induction cooker drying + annealing?

Rigid Ink article on How to Anneal
Thomas Sanlandere's Bake your PLA video
Hope these will clear up Annealing FDM prints.

MK2S kit owner since 8/15/2017

Postato : 25/10/2017 6:26 pm
spark
(@spark)
Reputable Member
Topic starter answered:
Re: Crazy idea, halogen induction cooker drying + annealing?

@Peter
There's always got to be a comedian in the group.
On hotspots, that was the main concern. For foods, it is very desirable to have seared surface whether it be poultry, cuts, or veg. Not so for plastic parts such as filament spools or the filament itself. Thanks for talking me off that ledge...set-and-forget annealing will have to be a project for another day.

MK2S kit owner since 8/15/2017

Postato : 25/10/2017 6:44 pm
Jim Cook
(@jim-cook)
Trusted Member
Re: Crazy idea, halogen induction cooker drying + annealing?

That is interesting. When my new printer comes I'm going to give it a try.
Thanks for introducing annealing plastic to me.


Rigid Ink article on How to Anneal
Thomas Sanlandere's Bake your PLA video
Hope these will clear up Annealing FDM prints.

Postato : 25/10/2017 8:02 pm
spark
(@spark)
Reputable Member
Topic starter answered:
Re: Crazy idea, halogen induction cooker drying + annealing?

You betcha!

MK2S kit owner since 8/15/2017

Postato : 26/10/2017 2:11 am
martin.m25
(@martin-m25)
Estimable Member
Re: Crazy idea, halogen induction cooker drying + annealing?

Looks more like a grill... will probably burn the spool from the top. Post some results when you have it!

- Martin

- Martin

Postato : 27/10/2017 7:03 pm
AJS
 AJS
(@ajs)
Noble Member
Re: Crazy idea, halogen induction cooker drying + annealing?

There are many ways to solve this problem. The fact that this is convection (there is a fan to circulate the heat, so there should not be hotspots) should help, but the spools itself will prevent good air flow. For annealing parts, it should be good. This can also be used to "re-dry" desiccant.

This is particularly important for soluble filaments - but so far I have not needed it.

A similar type, (more expensive), but custom fit to spool filament can be found here:

http://www.printdry.com

(I have never tried the printdry. This is not a recommendation. I just know of it and have been considering it.)

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 or loss. If you solve your problem, please post the solution…

Postato : 28/10/2017 7:30 pm
spark
(@spark)
Reputable Member
Topic starter answered:
Re: Crazy idea, halogen induction cooker drying + annealing?

@Aaron
Yeah, you've mentioned this before. I thought this would kill two birds with one stone, apologies to birds in the audience. The main reason I've walked back from the Buy button is that this is a convection cooker. I'm fairly sure based on photos, it is a semi-sealed heating volume, mostly to seal in the juicy juicy goodness with aforementioned crispy crust unlike that glorified and overpriced dehydrator. Look familiar? A dehydrator has strategically placed vents to expel water soaked warm air while pulling in fresh dry (relatively) air to heat, cycling moisture out of the system. I doubt the semi-sealed glass container in my find would do the same because Juicy Juicy goodness. So no, this is a no go unfortunately...but a DIY reflow mod to a large enough toaster oven could be even better. Shame, it is so pretty.

BTW, get the $36 dehydrator, cut a couple holes out of trays to get the height you want, it comes with 5. Kapton tape them together, and Bob's your uncle. No fishing around for perfect fit salad traveler either.

MK2S kit owner since 8/15/2017

Postato : 28/10/2017 8:12 pm
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