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 Post subject: Heatguns
PostPosted: Thu Mar 20, 2014 12:22 pm 
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Joined: Mon Jul 16, 2012 9:27 pm
Posts: 547
I know Hobie hull repair is done with a heatgun and color matching plastic, seen it done once, but what are the specifics of a heat gun for this purpose?
I have a Harbor Freight coupon for a cheap 1500 watt dual temp heatgun (572/1112 deg) and wanted to know if its worth buying to put down for the day I might need to do some repairs?


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 Post subject: Re: Heatguns
PostPosted: Thu Mar 20, 2014 1:47 pm 
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Joined: Fri Feb 05, 2010 6:46 am
Posts: 128
somebody GAVE me a heat gun and about all I have ever used it for was the heat shrink tape you use on electrical connections. I bought an outback with a leak... real cheap.... think the guy thought it was on it's last leg. He'd tried to patch the crack with all kinds of glue and putty. The hole was right where the fwd end of the mirage drive sat... I got tired of bailing and trying to cruise around with 10 gallons of water in the hull all the time... pulled out my trusty heat gun and the guy at the local yak shop gave me a couple of the plastic rods.... I started heating and kept feeding the rods in until they were used up.... smoothed it out a little with a popsicle stick and ain't had a leak since... GO FOR IT!


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 Post subject: Re: Heatguns
PostPosted: Thu Mar 20, 2014 6:05 pm 
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Joined: Tue Jul 19, 2005 6:29 pm
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Location: High Point, NC
A heat gun isn't what you want - it won't direct the heat onto a small enough area. What you're after is a sort of soldering iron. The ones made specifically for plastic welding have a bore that allows thin strips of plastic to be fed into the repair area under heat.


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 Post subject: Re: Heatguns
PostPosted: Fri Mar 21, 2014 5:37 am 
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Location: Amelia Island, FL
Tom is correct. You don't want to use a heat gun...


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 Post subject: Re: Heatguns
PostPosted: Fri Mar 21, 2014 7:30 am 
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ah, good points everyone, thanks.


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 Post subject: Re: Heatguns
PostPosted: Fri Mar 21, 2014 9:32 am 
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how small does the end of the HG need to be? Worked fine for me in a very small area... BTW, the tip of my gun is about the size of the tip of my little finger... and I got real small fingers... mebbe that's why mine worked...


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 Post subject: Re: Heatguns
PostPosted: Wed Mar 26, 2014 5:02 am 
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Joined: Thu Jun 14, 2012 6:18 am
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Location: New Smyrna Beach, FL
There are heat guns used for plastic welding (kayak repair). They are called hot air welders They heat to much lower temperatures than the Harbor Freight model you referenced or what you can get from home depot.

Here is a video from the folks at Liquidlogic a.k.a. Native Watercraft using a hot air welder for repairing a crack. https://www.youtube.com/watch?v=5bos4lfOA3k

_________________
Mike


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 Post subject: Re: Heatguns
PostPosted: Wed Mar 26, 2014 5:55 am 
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yep, that's what I used... notice - that gun has a stepdown to reduce the area it's heating.


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 Post subject: Re: Heatguns
PostPosted: Wed Mar 26, 2014 7:05 am 
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wow, thank goodness I didn't waste money on the harbor freight model!


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 Post subject: Re: Heatguns
PostPosted: Wed Mar 26, 2014 8:58 am 
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Joined: Mon Jun 01, 2009 11:59 am
Posts: 531
Wndrfl wrote:
There are heat guns used for plastic welding (kayak repair). They are called hot air welders They heat to much lower temperatures than the Harbor Freight model you referenced or what you can get from home depot.

Here is a video from the folks at Liquidlogic a.k.a. Native Watercraft using a hot air welder for repairing a crack. https://www.youtube.com/watch?v=5bos4lfOA3k



Thanks for sharing the web site for welding... Great help in understanding the process and techniques for a good bond...


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