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bending stems

Posted: Sun May 22, 2011 7:00 pm
by oklahoma red
Has anyone ever tried using a hot sand (glass beads or salt actually) bed to heat a stem for bending?
This is what a lot of eyeglass shops use to heat plastic frames for adjustment.
One would think that it would be a lot less problematic than using heat guns or open flames.

Re: bending stems

Posted: Sun May 22, 2011 8:57 pm
by Sasquatch
You can use whatever you want. But I use a candle and it works trouble free on all types of stems if you are even a little careful.

Re: bending stems

Posted: Sun May 22, 2011 9:11 pm
by baweaverpipes
Some also use an alcohol burner. I use a heat gun. Heated sand and glass beads take too much time and time is $$$$.

Re: bending stems

Posted: Sun May 22, 2011 11:23 pm
by kkendall
In a high production shop, it might make sense. You can pop stems into it and come back later to bend them after working on other tasks. But for onsie-twosies, an alcohol lamp or heat gun will get it done a lot quicker and for a LOT less money.

Re: bending stems

Posted: Mon May 23, 2011 12:10 am
by RadDavis
I know Mark Tinsky uses one of those optometrist sand boxes. They work fine unless you forget a pipe is in there and the tenon shrinks in the mortise.

Also, you have to make sure all of the little beads are off the stem, lest they leave little dimples in the ebonite from the pressure of your fingers.

I use and recommend a heat gun.

Rad

Re: bending stems

Posted: Mon May 23, 2011 12:34 am
by wdteipen
I also use a heat gun. Open flame around flamables is not my friend. Some guys like to live on the wild side though.

Re: bending stems

Posted: Mon May 23, 2011 1:30 am
by jogilli
I also use a heat gun.. I used a candle for a while, but prefer the heat gun

james

Re: bending stems

Posted: Mon May 23, 2011 8:36 am
by smokindawg
With as few stems as I bend, I use a bic lighter. Haven't tried the heat gun yet.

Re: bending stems

Posted: Tue May 24, 2011 8:46 am
by bluesmk
I use a heat gun.
Dan
Gabrieli Pipes

Re: bending stems

Posted: Wed May 25, 2011 3:07 am
by Boekweg
I use a heat gun.
Wow, it almost sounds like heat guns have the vote here.
8)

Re: bending stems

Posted: Wed May 25, 2011 7:33 am
by R.H.
I've tried a heat gun and a Zippo.
The Zippo is faster and cheaper.

Re: bending stems

Posted: Wed May 25, 2011 10:02 am
by RadDavis
R.H. wrote:I've tried a heat gun and a Zippo.
The Zippo is faster and cheaper.
To each is own , but I find it hard to believe that a Zippo is faster than a heat gun. Plus there's the soot factor when using a lighter.

It is cheaper though. :)

Rad

Re: bending stems

Posted: Wed May 25, 2011 10:56 am
by R.H.
To each is own , but I find it hard to believe that a Zippo is faster than a heat gun. Plus there's the soot factor when using a lighter.[/quote]

A heat gun (mine at least) needs 10-15 second to reach the temperature level required, a flame it's hot from the beginning. You can bend a stem in less than 10 seconds with a flame.

Re: bending stems

Posted: Wed May 25, 2011 1:41 pm
by RadDavis
R.H. wrote:To each is own , but I find it hard to believe that a Zippo is faster than a heat gun. Plus there's the soot factor when using a lighter.
A heat gun (mine at least) needs 10-15 second to reach the temperature level required, a flame it's hot from the beginning. You can bend a stem in less than 10 seconds with a flame.[/quote]

I'd like to see that done. :)

Rad

Re: bending stems

Posted: Wed May 25, 2011 2:08 pm
by R.H.
RadDavis wrote: I'd like to see that done. :)
I did it, but may be you're right, I was talking about an acrylic stem and it was short and thin.

Re: bending stems

Posted: Thu May 26, 2011 4:58 am
by adryazad
I use a candle most of the times, but sometimes just use a normal butane lighter.

Re: bending stems

Posted: Sat May 28, 2011 6:25 am
by Charl
Candle here! Come on candle guys, can't let the heat gun guys take over! :lol:

Re: bending stems

Posted: Sat May 28, 2011 7:29 am
by adryazad
Charl wrote:Candle here! Come on candle guys, can't let the heat gun guys take over! :lol:
the lower the tech the better.. less equipment failure rate... :p

....now where the heck did i put that candle...

Re: bending stems

Posted: Sat May 28, 2011 7:43 am
by R.H.
adryazad wrote:....now where the heck did i put that candle...
DonĀ“t worry, use a Zippo.

Re: bending stems

Posted: Sat May 28, 2011 9:25 am
by caskwith
I use a heat gun. A vice holds it so I have two hands free. Only takes me a few minutes to bend even a thick stem and i like how even and controlled the heating is with little chance of scorching.