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Old 10-10-2019, 03:16 PM   #1
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Spin Welding

I知 about to get tanks. I got a little sticker shock on the spin weld tools.

The grey and black tanks are ABS. Can稚 I just use ABS glue?

Any thoughts on what to do are much appreciated.
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Old 10-10-2019, 04:04 PM   #2
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I'd guess you would be OK with ABS glue. I've repaired cracked ABS dash boards with ABS glue backed up with fiberglass window screen and it works fine. Try a little experiment: glue a little scrap ABS to your tank using ABS glue (leave a bit extended past the tank edge) let it cure and then use the little ABS flap to support the weight of the tank. If this treatment doesn't pull the scrap off the tank in 3 or 4 days you'll be good to go. As to spin welding, I've done it on the translucent waxy surfaced tanks and had good luck spinning the weld with a router. It makes sense to me that the same procedure would work for ABS.
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Old 10-13-2019, 12:32 PM   #3
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ABS glue would be correct for ABS tank and DWV plumbing. If you have an ABS tank and PvC plumbing you need a specific glue for ABS to PVC.

The tank pictured above is HDPE (polyethylene). There is no glue that will stick to it. Spinweld is the way to go.

I will be buying the tool when I get ready. I called the "local" RV shop and they wanted $125 to install two fittings. Chuck that. I can get the tool for $100.
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Old 10-13-2019, 05:47 PM   #4
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I am assuming that you need to install plumbing fittings in your tanks moons ago I used glue and after about three years the joint cracked and leaked blacktank contents down parkway replaced tank and installed grommets sold moterhome 7 yrs later no leaks put 3 tanks in new bus used grommets in all no leaks. Gene
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Old 10-16-2019, 03:08 PM   #5
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I’m working with Custom Roto-Molding through Tank-Mart. I was told $10 to weld each fitting. I’ll update this when I get numbers.
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Old 10-17-2019, 11:51 AM   #6
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Quote:
Originally Posted by Danjo View Post
I知 working with Custom Roto-Molding through Tank-Mart. I was told $10 to weld each fitting. I値l update this when I get numbers.
How was their pricing for the tanks?

Shipping?
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Old 10-17-2019, 03:00 PM   #7
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Quote:
Originally Posted by PNW_Steve View Post
How was their pricing for the tanks?

Shipping?
The price of tanks seems fair, but if you get lots of customization it痴 gonna cost. For instance, $200 for a 35 gallon tank. Then $10 per spin weld fitting. So For my black tank I知 getting 4 sensors, a jet cleanout, a vent and threaded toilet flange hole. $270 +$60 to ship.

I was going to get ABS Icon tanks, shipped free through camperID, but in the tight spaces I知 putting tanks, the rotomolded tanks were offering more capacity for the space I have.

I want to say that tank-mart.com and Custom Roto-Molding Inc. have been great to work with.
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Old 10-17-2019, 03:15 PM   #8
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Ouch.......

I called Tank Mart.........

Their stock 100 gallon tank is twice the price of the tanks from Recpro. Recpro also has free shipping.
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Old 10-17-2019, 05:45 PM   #9
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Recpro’s black tanks are the same price. I’m going to take the hit on shipping. I’m using a shoehorn and a saw ,to fit them and getting the biggest that will fit, so I’m doing it. Seems like I’m doing a lot of that. I guess that’s an unforeseen consequence of being on a short bus.
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Old 10-17-2019, 06:13 PM   #10
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Quote:
Originally Posted by Danjo View Post
Recpro痴 black tanks are the same price. I知 going to take the hit on shipping. I知 using a shoehorn and a saw ,to fit them and getting the biggest that will fit, so I知 doing it. Seems like I知 doing a lot of that. I guess that痴 an unforeseen consequence of being on a short bus.
The Recpro tanks I have been looking at are 100 gallon tanks that are two for $509 shipping included .

I understand the space issues. My first bus had baggage bays that were 12' x 8' by 3.5'

I had plenty of room for tankage, electrical and plumbing in the bays with lots of storage space left.

I am definitely having to work harder to find space than I did on my Eagle.
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Old 10-17-2019, 06:45 PM   #11
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The addition of a shower changed the whole water use and supply dynamic. I知 definitely going to be working on an ultra low flow shower head option. Garden sprayer.
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Old 07-03-2020, 04:21 AM   #12
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i know this is an old post.

What about using 3M Marine 5200 sealant? Its pretty well permenant on just about anything I have gotten it on.
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Old 07-03-2020, 08:46 AM   #13
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Quote:
Originally Posted by Danjo View Post
The addition of a shower changed the whole water use and supply dynamic. I知 definitely going to be working on an ultra low flow shower head option. Garden sprayer.
check out showerloop
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Old 07-03-2020, 10:34 AM   #14
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Here is a copy of the Marine 5200 sealant technical data sheet which shows the shear strength when used on various materials. The first value is in PSI, the second is in Kg/square cm. You will notice that while it will stick to polyethylene it doesn't stick very well--not something you want to risk. Spin weld is still the best answer. See my post above dated May 12, 2012 and my build thread for some do's and don't's here: https://nomadicista.org/viewtopic.ph...2658&start=180
Jack

One inch (2.54 cm) overlap specimens (0.093 inch (0.2362 cm thickness). Samples cured at 70ーF (21ーC),
50% Relative Humidity.
Substrate psi kg/cm2

Wood(s):
Teak 502 35.3
Pine 680 47.8
Oak 549 38.6
Maple 656 46.1
Fir 700 49.2
Mahogany 564 39.7

Metal(s):
Steel 538 37.8
Stainless Steel 352 24.7
Aluminum 393 27.6
Brass 474 33.3
Bronze 252 17.7
Copper 198 13.9
Lead 107 7.5
Zinc (Galvanized) 484 34.0

Plastics/Polymers:
Fiberglass 362 25.5
Gelcoat 519 36.5
Polycarbonate 381 26.8
Acrylic 217 15.3
Nylon 175 12.3
ABS 231 16.2
Polypropylene 55 3.9
Polyethylene 48 3.4

Note: Because actual use conditions can vary for each application, each user must
determine the suitability of 3M Marine Adhesive/Sealant 5200 for the intended use.
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Old 07-03-2020, 10:50 AM   #15
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What about those plastic welders hf sells? anybody ever tried those? I would like to hear from actual users of them
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Old 07-03-2020, 11:15 AM   #16
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I did a little homework for you. Here is a report from an "actual user" straight from the HF site:
Jack

Recommended
Price
Power
Easy to Use
Quality
Durability
Great Value
Features
So far it's worked for several hours. Working with HDPE.
I used to weld HDPE panels together, as well as weld fasteners in place. I made an Ebike Battery box. I'll start with the CONs: The attachments aren't great for plastic welding. They're good for heating plastic, but don't aid in using plastic welding sticks. No aftermarket attachments available that I could find. It's loud? I guess? Pros: I only used level 5, and level 5 heat was more than enough for HDPE. The device heats up quickly. Had rubber padding on the device to rest it while you're not actively using it. Easy to use, even for my first weld.

VERIFIED BUYER

Christophe Fosterro

June 4, 2020
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