Anyone know anything about plastic welding?

[Bluesman]

Give these folks a call:

https://www.whitefieldplastics.com/

Take 99 East to Hardy Toll South.

Hope they can help you.

[deep n the heat]

This right here ^^^, is truth.


Got any pics of the cracked unit you can post?

[DallasCoon12]

Ive fixed one before with a plumbing epoxy. Product called pro poxy

[cva34]

3m 5200

worth a try but takes a week to cure...

utube got lots of stuff o plastic weld

[bps3040]

I had friends buy my pool parts out of state and ship in as they wont ship to Texas . If that don't work pull heater off and pvc a loop to bypass the heater till you can find parts later this year.

We sent a truck to New Orleans and loaded up [emoji2369]got to do what you got to do


Sent from my iPhone using Tapatalk

[texaswoods8]

What I've been running into in the field fixing stuff over the last three weeks is most of the time a heater manifold has cracked so has the tubing inside in the heat exchanger.

[cattlelackranch]

Superglue and baking soda. It’s used to fix carbon fiber chips in helicopter blades. I’ve used it a couple times.
Get liquid glue and place it in the crack and dust it with baking soda. Cures instantly and hard as steel.

[S-3 Ranch]

5200 fast cure

worth a try but takes a week to cure...

utube got lots of stuff o plastic weld

Permanent bonding – above and below the waterline
Fast-cure version of 3M™ Marine Adhesive Sealant 5200
Tack-free in 1-2 hours and typically cures within 48 hours
Tough and flexible polyurethane polymer forms strong bonds
Capable of retaining strong bonds during vibration, swelling, shrinking or shock
3M™ Marine Adhesive Sealant 5200 Fast Cure is a one-component, high-strength, moisture-curing, gap-filling polyurethane for permanent bonding of aluminum, wood, gelcoat and fiberglass. This fast cure version of 5200 is formulated to typically cure within 48 hours. It chemically reacts with moisture to provide strong, flexible bonds above or below the waterline.

https://www.westmarine.com/WestAdvisor/How-to-Select-Sealants-and-Caulk

I fix cracked water tanks with it , or 4200

[cattlelackranch]

Superglue and baking soda. It’s used to fix carbon fiber chips in helicopter blades. I’ve used it a couple times.
Get liquid glue and place it in the crack and dust it with baking soda. Cures instantly and hard as steel.

[ame="https://m.youtube.com/watch?v=KU2qph2vG9Y"]Super glue trick the cops dont want you to know - YouTube[/ame]

Here is a video that explains it. Start at 0:50
I’ve used it to repair a plastic radiator thermostat housing for a friend a few years ago and still holding.
Neighbor speared a plumbing pipe with a shovel planting a palm tree last summer. We used this technique and it’s still holding.
Dries instantly and hard as a rock.

[RifleBowPistol]

To weld a plastic, you need to know what type of plastic it is, then buy the correct plastic rod.

On that, I would probably, wrap it in fiberglass, if possible. You might find someone who has plastic welding experience, talk to them about welding it, then likely still wrap it in fiberglass, after plastic welding.


Last resort, you might find someone with a CNC mill, that could make you new piece, but that would cost a bit.

[sailor]

Pilar------------- Got it............
That 5200 is used on sailboats, for cracks even when your
underway...........

[Redbone]

I used to plastic weld bumpers and trim pieces in the body shop all the time. Still have the welding kit. You do have to know what type of plastic it is though. Most plastic parts are stamped with the material type. If it was me even if I plastic welded it, I would still go over it with one of 3m’s 2 part plastic repairs.

[Swampa]

If he’s ok with not running his heater for a while just bypass it and wait for parts to come in. My plumber bypassed 68 heaters last week. Just about everyone’s manifold cracked


Sent from my iPhone using Tapatalk

[deep n the heat]

If he’s ok with not running his heater for a while just bypass it and wait for parts to come in. My plumber bypassed 68 heaters last week. Just about everyone’s manifold cracked


Sent from my iPhone using Tapatalk

I have already bypassed it but the wife and kids do not want to wait 6mo for the parts. I’m going to give some of these ideas a try. If not I guess I’ll replace the heater. I think it’s 8-10 yrs old anyway.

[KX500]

I bought the cheapo plastic 'welding' kit from eBay or Harbor freight - something like that. It worked great for my Kayak.

But to call it 'welding' is a huge stretch - it's really just plastic soldering.

The kit I got was less than $20.