Heat bent PVC parts

by apnewton | August 12, 2015 | (15) Posted in How To

PVC plastic from plumbing pipes is a cheap and very versatile material

It's heat setting which means you can heat it up, bend into shape, and it will stay that way when it cools. That also means it's great for making lots of useful bits and pieces for RC flying.


The video and images below show how to make tthree very useful parts.

1. Brackets for a flight "selfie stick",

2. Mobius hat cam mount

3. Claw shaped tricopter landing gear.

MAKING A FLAT SHEET

First step is to cut off a short length of pipe. This one is 100mm long from a 75mm diameter pipe with 1.5mm wall thickness. I find a hack saw is the best for hand cutting PVC.

Then cut along the length to allow the tube to be opened out.

Using a paint-stripping heat gun, or even a decent hair dryer, heat the PVC until it softens enough to become flexible.

BEWARE when using heat guns, they blow very hot air, hot enough to strip paint. Make sure you are working on a heat resistant work surface with nothing flammable nearby and maybe wear work gloves. The 1.5mm PVC only takes 20 seconds or so to soften.

After about 20 seconds open up and flatten out the PVC.

It may be too hot to handle with bare hands so use a piece of thin timber to hold it flat for about half a minute.

Now we have a very useful flat piece of PVC plastic ready for shaping and bending into whatever you need.

 

FLIGHT "SELFIE STICK"

Here's how to make a selfie stick to record your flights from a unique viewpoint

I'm using an 808 #16 camera on a Bixler 2.

Trace around the camera and add a 40mm leg at the front and a 20mm leg at the back

My selfie stick uses a 7.6mm carbon tube spar so I drilled 8mm holes in the legs to slide over the spar

I also used the drill to form the concave corners then cut out the bracket using a hacksaw and tin snips

Finish off the rough edges with sandpaper or a file.

To bend the legs down apply a short blast of heat, maybe 10 seconds, protecting the area that will not be bent. A block of timber or metal ruler is useful for this.

Blocks of timber are also useful for forming 90 degree bends

The bracket will grip the spar tighter if you bend the legs out a bit from 90 degrees 

The camera is just taped or rubber banded in place. The lower bracket is made in the same way but the "body" area is wider and shaped to conform to the underneath of the Bixler nose. It's just taped in place with strong cloth tape.

Here is the finished selfie stick on a 19" spar.

Here's a video showing the great angle of view it gives

 

MOBIUS HAT CAM MOUNT

This mount is super easy to make. It only requires a 120mm x 30mm piece of PVC

Apply heat and bend into a Z shape. You will need to adjust the angle to suit your hat, head posture and desired angle of view.

It just clips on to the brim of your favourite flying cap with the Mobius rubber banded on.


CLAW SHAPED TRICOPTER LANDING GEAR

Starting with a 15mm ring of 75mm diameter PVC. I made up this claw shaped mold from particle board to form the landing gear.

Place it over your claw shaped mold and hold till cool.

There you have it. Just zip tie the landing gear onto your multicopter.

 The uses for this very versatile and cheap material are limitless. Just remember to be careful using the heat gun, clear your work area of any flamable materials and maybe wear heat resistant gloves to be safe.

As Knoptop would say..."Go make something"

 

All my building materials and RC gear - http://newtonairlines.blogspot.com.au/2015/03/materials-and-links.html

Newton Airlines blog (Plans) - http://newtonairlines.blogspot.com.au

Website - http://anewton.net

 

 

COMMENTS

ts20fan on August 14, 2015
Could you even make a FT Simple Firewall out of something like this?

Anyway, great article, it has inspired me to try something new!
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apnewton on August 14, 2015
Plywood is probably stiffer and lighter but yes PVC would work.
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Tri blades on August 15, 2015
Yes it would work but in cold weather the pvc will explode form vibrations pvc pipe is britle in clod weather.
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HilldaFlyer on August 15, 2015
Excellent ideas. Your capcam mount sure beats the one I made (out of foam). I think I'll copy you!
Best
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Noobi1951 on August 21, 2015
I recently built a power pod out of some old PVC window blinds. I didn't bend any of the parts as it was all flat work and I used PVC cement to stick it all together. It seems to be quite sturdy, but as others have mentioned it is quite heavy. I'm thinking of using it the next time I build a swappable plane that needs more nose weight : )
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rcrc on August 15, 2015
I see I am not the only one that has thought of making things by heat gunning pvc. My brother since a few days ago has been working on building landing gear out of pvc for my brand new tricopter. ,Should work really well . Nice job
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Guy123 on August 20, 2015
This is amazing, I really want to build something now! If only I had a reason... looking around the house to try and find something that needs a plastic part...
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Yogenh on August 14, 2015
This is great and hope to see a lot more like it

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PeterGregory on August 19, 2015
I can foresee using a lot of lightening holes - that material is pretty dense. The possibility of springiness and anti-shock is high with the curvy shapes you used. Finally, as you so adequately pointed out here in pictures, and as is the motto here at Crossthread AeroSpace, Inc., "CAD is so overrated." - See more at: http://flitetest.com/articles/heat-bent-pvc-parts#sthash.6Y5v36yN.dpuf
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Jacob Shore on August 15, 2015
nice I make control horns and the ft simple motor mount out of pvc an heat gun. Its great to see other people doing the same. the landing gear looks fantastic.

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stormboy on August 14, 2015
Man, I just love your articles. So inventive.
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banatijano on August 16, 2015
Well you don't have to reform a PVC pipe. You can buy them in sheets. Smaller ones in hobby shop for more or in larger quantities cheaper in special plastic shops. You can also buy foam PVC which is a lot lighter and cheaper (but also breaks a bit easier) all of them can be formed with heat gun just be aware that it shrinks a little.
I used 1-2-3-4mm thick ones white foam type I bought them in large sheets 2x3m (6m2).

It is still too heavy to build an plain just from it but great for local strengthening. you can bend them cut them, sand them anything…

Other great thing is that you can glue them very easily with PVC pipe glue. It is a stinky process :-) but it makes a perfect bond since it melts the PVC a little. Unlike polipropilene which is stronger material but very hard to glue.
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steadfast4life on August 15, 2015
Great article. Hmmm, now what to make?
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ashtodust2000 on August 15, 2015
Great job, Way to think outside the box!
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tsbanking on August 14, 2015
Very nice. Need more usefull articles like this!
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flying panda on August 14, 2015
Oh yes, great idea. I can see lots of uses, who needs a 3d printer!
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AndyPants on August 15, 2015
Wow, your landing gear is pretty awesome, well done sir!!
And thanx for sharing
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Heat bent PVC parts