Re: Cutting PVC trunking cleanly...

[Paul Gale <groups2@xxxxxxxxxxxxxxxx>]

Another tip is to get a sharp Stanley knife and use that after the cut
to trim the burrs of plastic that you will inevitably get with slower blade
speeds of manual saws.

I've got a very good table saw in my workshop that will easily do a great
job - you're welcome to send it to me or drop by if you're in the area -
may not be practical though if you're cutting trunking to size in-place.

Paul.

On 13 Dec 2010, at 08:43, "Paul Gale" <groups2@xxxxxxx>
wrote:

> Oh, and I've cut many bits of trunking with a manual (cheap) mitre saw
- I find that it can be pretty accurate, even with the cheap, rusty old
blade. Lubricating with WD40 could help too.
>
> This is the type I have:
>
> http://en.m.wikipedia.org/wiki/Miter_saw?wasRedirected=true
>
>
> Paul.
>
> On 13 Dec 2010, at 08:38, "Paul Gale"
<groups2@xxxxxxx> wrote:
>
>> If you don't want to spend anything/much, you could always make up
a cutting guide/box.
>>
>> All you need is three bits of timber nailed/screwed together to
form a C section (just like the open trunking shape) and so that the
trunking is held securely. Then cut a 45 degree slot in the uprights.
>>
>> You then use this as a guide with your existing saw to cut nice
neat 45 deg angles (or 90 deg angles with another slot). Pretty easy to
make.
>>
>> You really need to make sure the saw is sharp though for best
results and has fine teeth / high teeth per inch.
>>
>> Paul.
>>
>> On 12 Dec 2010, at 23:27, "Phil Harris"
<phil@xxxxxxx> wrote:
>>
>>> I decided to take a shot at it today with my existing manual
mitre saw and I have to say it looks a bloody mess. :-)
>>>
>>> Obviously my old mitre saw has enough slop in it to completely
arse up even a basic 45 degree join so I may have to redo it (I have enough
trunking left I think)...
>>>
>>> Phil
>>>
>>> Sent from another bloody fruit-based portable device...
>>>
>>> On 12 Dec 2010, at 17:33, Stephen McGarry
<stephen@xxxxxxx> wrote:
>>>
>>>> A thought is to make a piece of wood to fit inside the
trunking and support the sides while its being sawn with a mitre
>>>> saw. The Evolution saws have a fine blade which cuts less
harshly than standard saws (and they cut nearly everything).
>>>>
>>>> HTH
>>>> Stephen
>>>>
>>>> On 12/12/10 09:13, Peter + Jane wrote:
>>>>> I have a high end German sliding mitre saw and am
>>>>> near the end of a complicated self build. I have
>>>>> used the saw endlessly for plastic soil pipe and
>>>>> waste pipe. The trouble with trunking is it is a
>>>>> bit thin and flappy. You would need a very fine
>>>>> blade and would need to cut very slowly to avoid
>>>>> snatching, chipping or splintering. Hence my
>>>>> preference to mark with a pencil, cut with an
>>>>> angle grinder and then finesse back to the line.
>>>>> Simples!
>>>>> But each to their own!
>>>>> With a lot to do, an abrasive disc in a chop saw might
be ideal.
>>>>> Rgds
>>>>> Peter
>>>>> At 08:57 12/12/2010, you wrote:
>>>>>>
>>>>>>
>>>>>> PVC trunking ..... tricksy stuff....
>>>>>>
>>>>>> I think something like this
>>>>>> <http://www.screwfix.com/prods/33776/Power-Tools/Compound-Mitre-Saws/Erbauer-ERB238MSW-254mm-Sliding-Mitre-Saw-230V>http://www.screwfix.com/prods/33776/Power-Tools/Compound-Mitre-Saws/Erbauer-ERB238MSW-254mm-Sliding-Mitre-Saw-230V
>>>>>>
>>>>>> I have an Erbauer, cant recommend it enough. Given
that trunking is tricksy,
>>>>>> you might need something to trim the bits off
>>>>>> with so what about a Dremel 8000
>>>>>> as well.... just in case. :-) :-) :-)
>>>>>>
>>>>>> robin
>>>>>>
>>>>>> On 11/12/10 22:14, Phil Harris wrote:
>>>>>>> Wondering if I can use it as an excuse to get
>>>>>> a nice sliding compound mitre saw for myself
>>>>>> 'for Xmas' (but I might buy it tomorrow from
Screwfix of course...
>>>>>>>
>>>>>>> Phil
>>>>>>>
>>>>>>> Sent from another bloody fruit-based portable
device...
>>>>>>>
>>>>>>> On 11 Dec 2010, at 21:11, "Tracey
>>>>>> Gardner"<<mailto:tracey.gardner%40talktalk.net>tracey.gardner@xxxxxxx
<mailto:tracey.gardner%40talktalk.net>>
>>>>>> wrote:
>>>>>>>
>>>>>>>> A chop saw with a decent high TPI blade
would do the trick.
>>>>>>>> Especially if you cut it with the lid on?
>>>>>>>>
>>>>>>>> Tracey
>>>>>>>>
>>>>>>>>> I need to cleanly cut mitres in some
4" x 2" rectangular profile trunking
>>>>>>>>> and was wondering if anyone knows
whether it's possible to use hot wire
>>>>>>>>> cutters to get a nice clean and square
cut
>>>>>> or am I stuck with using my old
>>>>>>>>> 18TPI mitre saw which doesn't do that
good a job on the relatively floppy
>>>>>>>>> box section of the trunking...
>>>>>>>>>
>>>>>>>>> Phil
>>>>>>>>>
>>>>>>>>
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