Hot air gun

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Hot air gun

This topic has 14 replies, 7 voices, and was last updated 14 December 2015 at 22:55 by the artfull-codger.

Viewing 15 posts - 1 through 15 (of 15 total)

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14 December 2015 at 09:05 #216278
Speedy Builder5
Participant
@speedybuilder5
Is this really possible at 600 Deg C ?? Click on the picture of bending copper water pipe (15 mm ?)

**LINK**

BobH

Edited By Speedy Builder5 on 14/12/2015 09:06:41
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14 December 2015 at 09:05 #15820
Speedy Builder5
Participant
@speedybuilder5
Bending copper tube
14 December 2015 at 10:00 #216285
Brian Wood
Participant
@brianwood45127
Not without a pipe spring inside, which of course they don't show. Unsupported, it will crease and fold up every time, hot or cold. Even with a spring inside it needs pulling round your knee, you can't expect it to flow like plasticene

I don't believe the claimed working temperature either, boyo would have a job holding copper pipe at that temperature in his bare hands that close to the heat source.

Very large doses of advertising puff here I think.

Brian

Edited By Brian Wood on 14/12/2015 10:00:39
14 December 2015 at 10:05 #216287
Gordon W
Participant
@gordonw
All I get with the link is a screwfix ad. ! They are usually pretty good with claims.
14 December 2015 at 10:48 #216296
mechman48
Participant
@mechman48
… All I get with the link is a screwfix ad. !

Same here..?
14 December 2015 at 11:01 #216299
roy entwistle
Participant
@royentwistle24699
Same here
14 December 2015 at 11:11 #216301
Brian Wood
Participant
@brianwood45127
You have to click twice, close the overall Screwfix ad and do it again.

Product code 68560, De Walt hot air gun

Brian

Edited By Brian Wood on 14/12/2015 11:11:53
14 December 2015 at 11:21 #216304
Gordon W
Participant
@gordonw
Still can't get it- better things to do.
14 December 2015 at 11:37 #216309
Nicholas Farr
Participant
@nicholasfarr14254
Hi, here it is **LINK** at £46.99

Regards Nick.

P.S. Bob's link appears to be an EU web page and it is priced at 63.99 euros

Edited By Nicholas Farr on 14/12/2015 11:44:09
14 December 2015 at 17:51 #216365
mechman48
Participant
@mechman48
Not enough distance between hands to get the required leverage to bend pipe, plus it must have been done on a pipe bender initially, or as Brian says with a pipe spring inside, & then bent on his knees… oh we poor mortals; to be taken in by such succinct advertising.

George.
14 December 2015 at 18:24 #216372
Speedy Builder5
Participant
@speedybuilder5
Yes, Thanks Nick, the web site picks up my IP address in France. By my question was – Is 600 deg C really hot enough to alter the properties of a piece of copper pipe to make it easier to bend. I didn't think it was.
Incidentally, I quite often bend 15mm pipe (16mm here in France) around a gas bottle without a spring after annealing. 22mm takes a bit more grunt !!
BobH
14 December 2015 at 18:58 #216385
Brian Wood
Participant
@brianwood45127
Hello Bob,

I bet you get quite a lot of flattening doing it that way.

Brian
14 December 2015 at 19:16 #216388
Speedy Builder5
Participant
@speedybuilder5
Nope – The secret (if you can call it that) is to anneal the tube first, heat to dull red and quench in cold water. "As Drawn", you have no chance.
14 December 2015 at 19:16 #216389
Nicholas Farr
Participant
@nicholasfarr14254
Hi Bob, well apparently 600 deg C is hot enough, see this **LINK**. However, I don't know if you would be able to get the required amount of heat into a piece of copper pipe shown in the ad, and probably not before it started to burn your hands, even though the ad shows the guy doing it with gloves on. I've had to anneal 15mm copper pipe to do some plumbing jobs and needed a fairly big propane flame in free air and it takes a bit of doing over the length that the ad seems to show. But what do I know.

Regards Nick.
14 December 2015 at 22:55 #216409
the artfull-codger
Participant
@theartfull-codger
Looks a load of rubbish to me, one of the easiest ways to bend plumbing pipe if it's hard is to anneal it[heat to red] quenching in water does nothing to the annealing process other than cooling it & helps some of the scale to come off then put a pipe spring up the bore.
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