Re: Mounting PVC Fitting for Boring
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HCL?? Reads article… yup, HCL. ? Yeah, don’t heat up PVC so much where it goes past being all gooey, it releases chlorine (nasty stuff) that combines with water in the air to create hydrochloric acid.? Now breathing that isn’t too good for your lungs, but even worse it’ll make your lathe & other tools go rusty really quickly.? That’ll really upset you. ? Like most plastics PVC will start going soft at about 100C (boiling water temperatures), well below the stage where it’ll start outgassing and causing trouble. ? It’ll be fine. ? I once tried laser cutting polycarbonate.? It didn’t work, emitted a nasty looking yellow-brown smoke and made things go rusty, not recommended.? Yep, chlorine & HCL. ? Tony ? ?
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From: [email protected] <[email protected]> On Behalf Of mario mohl via groups.io
Sent: Monday, 28 October 2024 3:39 AM
To: [email protected]
Subject: Re: [7x12MiniLathe] Mounting PVC Fitting for Boring? An anecdote?? ?Wow !? ? At least READ what you post.??exposure to fumes from an overheated (362 degrees C) PVC extruding machine. Fear mongering, pure and simple. ? Not bull... we've had workers that had to be hospitalized due to heating
PVC.
Do what you want.? Not fear mongering.
On 10/27/2024 11:29 AM, mario mohl via wrote:
> Bull....
> Overheating / burning it is a problem you want to avoid for more and bigger
> reasons than some fumes.
>
> Heat it by immersion in boiling water.
>
> Ventilation is also welcome, always, for many reasons as well.
>
> So yeah, don't lock yourself up in an airtight room to burn some PVC. That
> would be just as stupid as it sounds.
>
> Be sensible, the rest is fearmongering.
>
> On Sun, Oct 27, 2024 at 9:06?AM WAM via <ajawam2=
> [email protected]> wrote:
>
>> Careful when heating PVC... It gives off nasty fumes
>>
>>
>>
>>
>> On 10/27/2024 7:00 AM, Pierre-Raymond Rondelle via wrote:
>>> I can confirm that Mario's method is an excellent one.
>>>
>>> In addition, if you want to restrain the diameter, use a glass jar into
>> you push
>>> the elbow in after hot air heating it. Don't use a flame, it may damage
>> the PVC
>>> and/or give a poor result. You also may turn a piece of metal tube at the
>>> required dimension. Keep in mind that in this case the metal tube shall
>> also be
>>> heated otherwise it will be difficult to restrain a plastic tube being
>> cooled by
>>> the cold tube during the operation.
>>>
>>> I used these two methods a lot of times and it always worked. If the
>> result
>>> isn't what you wanted, heat it again and it will almost recover its
>> original
>>> shape :-)
>>>
>>> It also works well on nylon tubing. I purchased 3/8" tube for my
>> compressed air
>>> distribution and it happened to be 10mm. My fittings were 3/8". Instead
>> of
>>> wasting time with a new order, I restrained the nylon tube using the
>> second
>>> method. No leak @ 8 bars for at least12 years.
>>>
>>>
>>> On 27.10.24 02:38, mario mohl via wrote:
>>>> Better still. Turn a wood dowel to the desired ID and use it to expand
>> the PVC
>>>> after slightly heating it
>>>
>>
>>
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