Problem with the firesleeve

[Andrés Ayuso]

My extruder's piece of firesleeve just broke!!

Is it necessary for the extruder to work?

Or it can work right without it?

[Nicolas Arias]

just wrap some kapton around and it will be ok.

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[Andrés Ayuso]

Ok. Thanks

[László KREKÁCS]

Hi,

You can always drop me a line and I'll ship you one for free (at
shipping costs).

I may add it to the website, and I can always give reduction to hotend owners.

Best,
Laszlo

[Andrés Ayuso]

I have a very simple question:

Is the fire sleeve necessary for the hotend to work?

Anyway I'll fix it with Kapton and take a look if that works, and if it doesn't the I'll drop you a line Laszlo

Thank you

[László KREKÁCS]

Hi,

It is not strictly necessary, in fact I have sold for two years without it.

But for a hotend failure many things accumulates:
- slow printing a small modell (ie. the hotend stays almost stacionary
at the same spot)
- no fan on the carriage
- no insulator around the hotend

If you have no insulator it means more dissipation around it, more
heat can convect at the top
raising the temperature around the heatsink.
No insulator means to keep the hotend at the same temperature you need
more power,
because it can dissipate more heat around it.

As you may have noticed the hotend is way overengineered.
So it can fail really rarely, and it fails there are other things gone wrong

So you will be most probably fine without any insulator around it, if
you have a fan, then almost certain,
if you print big models relatively fast, then you dont need anything
(fan, insulator).

But to minimize the warranty issues on my side, it the safest for me
to advertise for
maximum security.
So fewer people contact me directly, you know you can DDOS a single
person relatively quickly...

Almost all of my product development is drived by this principle.
Design for the best, except the worst:)

Still the insulator shipped looks the best on the hotend, for free (at
shipping cost) is a really good deal imho.

Best,
Laszlo