[OpenSCAD] 3D Printer

nop head nop.head at gmail.com
Wed Apr 25 05:38:18 EDT 2018


Well I have spend years amongst 3D printers with PTFE liners running at
255C and haven't noticed my neurons being poisoned. Wikipedia says above
300C for Teflon flu. https://en.wikipedia.org/wiki/Polymer_fume_fever



On 25 April 2018 at 10:03, Rick <graham.rick at gmail.com> wrote:

> > Above 240C, teflon releases an odorless colorless neurotoxin which is
> very harmful.
>
> That's good information, thanks Jamie.
>
> On Tue, Apr 24, 2018 at 7:20 PM, Jamie Bainbridge <
> jamie.bainbridge at gmail.com> wrote:
>
>> For nylon, the number one thing you want is an all-metal heatbreak.
>>
>> Many of these cheap Chinese printers have a design where the teflon
>> filament tube goes down into the hot nozzle area. Above 240C, teflon
>> releases an odorless colorless neurotoxin which is very harmful. You
>> will need to go over 250C to print Nylon, so a printer design with the
>> teflon tube up against the nozzle is not suitable.
>>
>> If you buy one of these cheap machines with the teflon tube hotend,
>> then spend the money upgrading the hotend to a genuine E3D V6 hotend
>> which has an all-metal heatbreak. Buy from a genuine reseller such as
>> Filastruder (USA) or E3D themselves (UK). You will find designs for
>> upgrading most printers to a V6 on Thingiverse or MyMiniFactory.
>>
>> Don't believe cheap printer vendor marketing and don't buy a cheap
>> clone hotend. A lot of them sell these teflon-lined hotends as
>> "improved design" which isn't actually an improvement at all. Where a
>> cheap clone actually has a metal heatbreak, usually the machining is
>> inferior which just leads to filament clogging.
>>
>> Jamie
>>
>>
>>
>> On 25 April 2018 at 04:22, fractorr <fractorr at gmail.com> wrote:
>> > I am looking at buying a 3D printer, just looking for a small fairly
>> > inexpensive 3D printer, any recommendations?  It just for prototyping
>> small
>> > pieces with a max size of about 4" x 4" x 1", does not need to super
>> fast,
>> > hoping to be able to use nylon, something in the $300 - $500 range if
>> > possible.
>> >
>> >
>> >
>> >
>> > --
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>> >
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>
>
>
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