bending pvc

[treesprite]

I found heat guns on sale at Harbor Frieght Tools several days ago (only $10), so I decided to get one and bend some of my PVC isntead of using so many elbows. Due to the way my setup is, there are a lot of turns and the risk for leaks was too high for my comfort.

 

The pic is of 1/2" PVC which is the small return from the fuge/dsb.

 

I didn't do this with the return from the primary pump, basically because I need to be able to bend the 1" pvc without getting really restrictive creases. Does anyone have a technique for preventing severe creases that would seriously restrict flow in 1" pvc?

Edited March 20, 2009 by treesprite

[flowerseller]

try packing it with sand, heating and bending.

You sure a couple feet of flexible pvc wouldn't be better?

[treesprite]

try packing it with sand, heating and bending.

You sure a couple feet of flexible pvc wouldn't be better?

I already have this pvc here and it only takes a few minutes to put the bends in it.

[Origami]

I've heard of people packing cornstarch into the pipe and bending it, too. I couldn't tell you how it compares with sand. Maybe it doesn't conduct heat as well (which is what you want in this case). Or maybe sand is better. Give it a go and report back!

[reefmontalvo]

Be sure you also check to make sure your not making the pipe brittle at the points of greater heat.

[ctenophore]

Try using a curved object to form the pipe around while it is hot. Maybe a mason jar, applesauce jar, or larger, depending on the size of the pipe. Cornstarch/sand is a great idea, I never thought of that!

[lanman]

put an old-fashioned screen-door spring inside - assuming you can find one that fits fairly snug.

 

bob

[treesprite]

I tried the sand method in teh 1" pipe for the returns and it worked perfectly!