O.T. Plasma cutter

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On or around Sat, 14 Aug 2004 18:14:49 +0100, Steve Taylor
<[email protected]> enlightened us thusly:

>Austin Shackles wrote:
>
>>
>> well, I wasn't about to run an buy one. However, if you factor in the cost
>> of a big enough compressor, it doesn't look so silly.

>
>Do you reckon ? It can't have THAT big a compressor in it.


well, I assume it has a compressor big enough for its needs. I've no
details other than what's on the page.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Ask yourself whether you are happy, and you cease to be so."
John Stuart Mill (1806 - 1873)
 
On Sat, 14 Aug 2004 20:48:28 GMT, "Rich"
<[email protected]> wrote:

>my plasma king 25 from machine mart requires about 5 bar constant pressure
>the compressor I have is a 3HP 14 CFM 240 volt 150 psi max, and it works
>fine for all my air tools but if you have long air lines i.e. more than
>about 10 mtrs you must increase the internal dia size of hose to maintain
>cfm. You really don't need a compressor any smaller than this in my opinion
>it works fine for me and I use angle sanders and da sanders and they can be
>run as long as I need to and the compressor can cope with it.
>A oxy cutting torch is all very well but how do you cut ally with it to
>patch up your landy or cut out a bit of corroded panel !!!! ( a plasma
>cutter )


You use an air powered hacksaw.

Alex
 
Alex wrote:

>
> You use an air powered hacksaw.


To cut 20mm circles ?

Steve
 
Steve Taylor wrote:

> Alex wrote:
>
>>
>> You use an air powered hacksaw.

>
> To cut 20mm circles ?
>


I personally use a hole saw for that.

P.
 
Steve Taylor wrote:

> Or do I have to cool my heels till Monday ?


Well, SIP STILL haven't delivered a manual but.....

Bwaaa hahahahahah !! IT WORKS !. The secret is to depress the tip
against the work, and the arc strikes. I just spent a happy half an hour
cutting curlicues and filigree out of 5mm plate steel, not far short as
fast as you could draw with a pencil....

What a tool. Worth every penny. Make sure you have a fat power circuit
though.

Steve
 
Steve Taylor vaguely muttered something like ...

> What a tool. Worth every penny. Make sure you have a fat power circuit
> though.


First welding kit my brother got )He's now a professional welder) was used
on a circuit in the shed, fed from the house lights ..

He somehow blew the whole street ... apparently some fault in a local
sub-station co-incided with his 'practice welds' ... ;)


--
Paul ...

(8(|) ... Homer Rocks

"A tosser is a tosser, no matter what mode of transport they're using."


 
Steve Taylor wrote:

> What a tool. Worth every penny. Make sure you have a fat power circuit
> though.


Ah but....
Beware.

The model I have, the 25 SHOULD have a pilot arc start - this unit
doesn't- its got a bump start, therefore its been built
wrong.....copious apologies from SIP, and NEW cutter coming on Friday....

and its also very clever, its capacity is 5mm or 1/4" - so if you cut
imperial sizes, you get 27% more capacity. How it can tell I don't
know... :)

Steve
 
Rich wrote:
> I got a 25 amp plasma cutter a couple of years ago from machine mart and in
> their catalogue it said it had a pilot arc but after buying it found out
> only the bigger models have that and the 25 amp ones all have press start
> but it is a great bit of kit you buy an 8x4 sheet of ally how do you cut it
> up oh yes you use a plasma cutter and you are away what shape do you want ok
> there you go !!!!!!!!!!!!!!!!!!


Looks like that is what they are trying to pass off on me, except I have
all the product literature, and a manual that says that this is a pilot
arc start too. The "new" cutter they sent this afternoon is the same old
crap as the first one.

'K' Steels, our suppliers, are dragging the SIP rep to see me on Monday,
at my premises, where we expect to see the pilot arc we have paid for
demonstrated. 'K's are extremely ****ed off with this, since it was on a
special promotion offer. I'll let you know what happens......

Steve
 
I got a 25 amp plasma cutter a couple of years ago from machine mart and in
their catalogue it said it had a pilot arc but after buying it found out
only the bigger models have that and the 25 amp ones all have press start
but it is a great bit of kit you buy an 8x4 sheet of ally how do you cut it
up oh yes you use a plasma cutter and you are away what shape do you want ok
there you go !!!!!!!!!!!!!!!!!!
Should have got one many years ago, also great for chassis cutting those
outriggers off cutting out rust holes in the chassis etc the list is endless
Rich ( mig and plasma cutter what else do you need!!!!!!!!!!!!!! )


<snip>
> The model I have, the 25 SHOULD have a pilot arc start - this unit
> doesn't- its got a bump start, therefore its been built
> wrong.....copious apologies from SIP, and NEW cutter coming on Friday....
>
> and its also very clever, its capacity is 5mm or 1/4" - so if you cut
> imperial sizes, you get 27% more capacity. How it can tell I don't
> know... :)
>
> Steve



 
Austin Shackles wrote:
o.
>
> 'ere, anyone know anything about welding titanium? I assume it means TIG
> and considerable skill/practice...


It will spot weld too.

Steve
>

 
I got a 25 amp plasma cutter a couple of years ago from machine mart and in
their catalogue it said it had a pilot arc but after buying it found out
only the bigger models have that and the 25 amp ones all have press start
but it is a great bit of kit you buy an 8x4 sheet of ally how do you cut it
up oh yes you use a plasma cutter and you are away what shape do you want ok
there you go !!!!!!!!!!!!!!!!!!
Should have got one many years ago, also great for chassis cutting those
outriggers off cutting out rust holes in the chassis etc the list is endless
Rich ( mig and plasma cutter what else do you need!!!!!!!!!!!!!! )


<snip>
> The model I have, the 25 SHOULD have a pilot arc start - this unit
> doesn't- its got a bump start, therefore its been built
> wrong.....copious apologies from SIP, and NEW cutter coming on Friday....
>
> and its also very clever, its capacity is 5mm or 1/4" - so if you cut
> imperial sizes, you get 27% more capacity. How it can tell I don't
> know... :)
>
> Steve



 
Rich wrote:
> I got a 25 amp plasma cutter a couple of years ago from machine mart and in
> their catalogue it said it had a pilot arc but after buying it found out
> only the bigger models have that and the 25 amp ones all have press start
> but it is a great bit of kit you buy an 8x4 sheet of ally how do you cut it
> up oh yes you use a plasma cutter and you are away what shape do you want ok
> there you go !!!!!!!!!!!!!!!!!!


Looks like that is what they are trying to pass off on me, except I have
all the product literature, and a manual that says that this is a pilot
arc start too. The "new" cutter they sent this afternoon is the same old
crap as the first one.

'K' Steels, our suppliers, are dragging the SIP rep to see me on Monday,
at my premises, where we expect to see the pilot arc we have paid for
demonstrated. 'K's are extremely ****ed off with this, since it was on a
special promotion offer. I'll let you know what happens......

Steve
 
Steve Taylor wrote:

> Alex wrote:
>
>>
>> You use an air powered hacksaw.

>
> To cut 20mm circles ?
>


I personally use a hole saw for that.

P.
 
<snip>

> 1. What Plasma cutter could I realistically expect to work on a
> domestic (13A plug socket) supply?


You can get high frequency ones which run off a standard 13A socket outlet
will cut to about 6mm thick

The cheap ones like I got from machine mart which is called a 25 means it
uses 25 amps when running from the supply, use a propper circuit you can
burnout the sockets ive done it !!!!!!!!!!



> 2. How easy is it to cut a dead straight line using a plasma cutter?


no problem at all just run it along a piece of wood only as good as the
opperator use a guide if you think you can cut a straight line free hand you
cant its impossible !!!!!!!!!!!!!!!!!!!!!!!
>
> 3. What quality of cut could I expect on 2mm and 4mm ally sheet
> (like, better than a very good jigsaw cut?)


I have done this and you get no distortion at all and a very clean cut and
quick as well


> 4. How much would I pay for 1. (above) that'll give me 2. (above)
> with a good finish as in 3. (above).


I think a high frequency one is quite dear £500 ish the one I have seen is
made by Telwin I think or something like that small compact unit but have a
good compressor they DO USE lots of air !!!!!!!!!!


> ok... 4 questions... :)
>
>
> --
> Some Land Roveresque (101 biased), links available
> from: http://links.solis.co.uk/Geek/X4_Land_Rover/
> I also have a little Land Rover site biased toward
> my beloved 101 "Grumble", at: http://www.101fc.net
>
>
> Reading this in 'alt.fan.landrover'? Did you know
> there's a group FAQ: http://www.aflfaq.dyndns.info



 
On or around Fri, 13 Aug 2004 23:42:00 +0100, Steve Taylor
<[email protected]> enlightened us thusly:

>A domestic ring main is rated for 30 A, so if you are happy to put a
>bigger 240V connector somewhere you can run my 25A cutter on your
>supply. On a 13 A plug ? Forget it.


hang on, is that 25A input?

if so, you could run it on yer domestic ring main stylee thing by fitting 2
plugs.

My old stick welder (the one that's jammed on full output) used to eat 13A
fuses when used for any noticeable amount of welding. Providing it with 2
lengths of 1.5mm² flex and 2 plugs solved the problem. You have to be a bit
careful about what you plug it into, and you also have to be very careful
not to plug just one plug in - the other will of course be live.

but it works.

alternatively, fit a blue industrial socket in yer garage.

Must look into the plasma cutter thing, it'd come in handy here too.

how precisely can it be controlled?

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Pereant qui ante nos nostra dixerunt"
(confound the men who have made our remarks before us.)
Aelius Donatus (4th Cent.) [St. Jerome, Commentary on Ecclesiastes]
 
On or around Fri, 13 Aug 2004 23:23:26 +0100, Mother <"@ {mother}
@"@101fc.net> enlightened us thusly:

>4. How much would I pay for 1. (above) that'll give me 2. (above)
>with a good finish as in 3. (above).
>
>ok... 4 questions... :)


buggered if I know if it's any good, but just found this one:

http://www.justoffbase.co.uk/s.nl/c.317638/sc.9/it.A/id.8420/.f

which has its own compressor.
--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
Appearances: You don't really need make-up. Celebrate your authentic
face by frightening people in the street.
from the Little Book of Complete B***ocks by Alistair Beaton.
 
On or around Sat, 14 Aug 2004 14:23:27 +0100, Denis F
<[email protected]> enlightened us thusly:

>On Sat, 14 Aug 2004 09:20:48 +0100, in
><[email protected]>, Austin Shackles
><[email protected]> wrote:
>
>>http://www.justoffbase.co.uk/s.nl/c.317638/sc.9/it.A/id.8420/.f

>
><faints after reading price>


well, I wasn't about to run an buy one. However, if you factor in the cost
of a big enough compressor, it doesn't look so silly.

however, I reckon I'll get an oxy cutting torch instead.

--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
Too Busy: Your mind is like a motorway. Sometimes it can be jammed by
too much traffic. Avoid the jams by never using your mind on a
Bank Holiday weekend.
from the Little Book of Complete B***ocks by Alistair Beaton.
 
On Sat, 14 Aug 2004 20:48:28 GMT, "Rich"
<[email protected]> wrote:

>my plasma king 25 from machine mart requires about 5 bar constant pressure
>the compressor I have is a 3HP 14 CFM 240 volt 150 psi max, and it works
>fine for all my air tools but if you have long air lines i.e. more than
>about 10 mtrs you must increase the internal dia size of hose to maintain
>cfm. You really don't need a compressor any smaller than this in my opinion
>it works fine for me and I use angle sanders and da sanders and they can be
>run as long as I need to and the compressor can cope with it.
>A oxy cutting torch is all very well but how do you cut ally with it to
>patch up your landy or cut out a bit of corroded panel !!!! ( a plasma
>cutter )


You use an air powered hacksaw.

Alex
 
Alex wrote:

>
> You use an air powered hacksaw.


To cut 20mm circles ?

Steve
 

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