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Cheap mistake

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Admin
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460 Posts

Initially Posted - 01/20/2011 : 06:17:04

So, we needed to replace our PortaPotti. I found a good price on Amazon and made the purchase, it arrived.

Mistake? Didn't realize it was the RV model and not the MSD version!

The difference?
The RV version does not have the hold down points on the base

Making lemonade out of it:
The original Thetford PP was too small for our typical cruises(normally 4 or 5 days, which results in plenty of poop

) So we replaced that with a Dometic piece of carp which lasted less than 2 years.

Note: we do have the original Thetford PP as a backup (I know, it's a pun!)

Anyway, when I installed the Dometic, I had to drill new holes for the hold down system. I deliberately did not fill them just in case we ever needed to revert to the Thetford.

Of course, the new, 5.5gallon holding Thetford PP does not fit either the original hold down setup, nor the Dometic hold down system, so I would need to drill a 3rd set of holes... had I not made the mistake of getting the RV model!

My plan is to make a plate using a plastic cutting board that fits the existing Dometic hold down system and then glue the plate to the new PP using 5200.

Will take pics

Paul

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Edited by - on

Dave5041
Former Mainsheet Editor

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USA
3758 Posts

Response Posted - 01/20/2011 : 07:15:01

Sounds like one of my snowballing chains.

. You might want to test 5200 with HDPE scraps first to see if it will actually bond.

Took a side-trip to check and found this at Jamestown Distributers:

StarBoard can not be glued using standard adhesives. Products like 3M's 5200 work well as a water sealing caulk but will not adhere StarBoard to itself or other materials in a permanent bond.

It is preferable to mechanically fasten StarBoard but when an adhesive is necessary you can use a product called #7540-AB or 3M's Scotch-Weld DP-8005. We do not represent these products, make any claims about their abilities or except liability for them. We have however used them with success and had good response from others who have used them.

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Stinkpotter
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Djibouti
9080 Posts

Response Posted - 01/20/2011 : 08:16:02

Ummmmm.... Thinking... thinking... thinking..............

Why don't you return it for the right model?

Whew! I need some rest now.

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OJ
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Response Posted - 01/20/2011 : 13:57:21

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Stinkpotter
 Ummmmm.... Thinking... thinking... thinking..............

Why don't you return it for the right model?

Whew! I need some rest now.

Edited by - on

Happy D
Admiral

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921 Posts

Response Posted - 01/20/2011 : 16:06:19

I cut a piece of Teak and Holley plywood to cover up all the holes. Here is a photo of it natural. I have since varnished it.

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Admin
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Response Posted - 01/20/2011 : 19:08:26

Thanks for the heads up (oh oh, another pun :) about the glue.

Good idea to do a few practice glue ups first.

I'll even consider self adhesive velcro. worth a try.

Paul

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Stinkpotter
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Djibouti
9080 Posts

Response Posted - 01/20/2011 : 21:42:10

...all that effort for nothing.

Based on my personal (boat shoe) experience in the streets of New York, Double-Bubble might be the most tenacious adhesive out there. Whatever you choose, I hope it works--the potential consequences are... ummmmm...

I'll just warn you that the original hold-down system relied on a small amount of tension to keep the pottie locked in place. Good luck with that.

Edited by - Stinkpotter on 01/20/2011 21:45:11

GaryB
Master Marine Consultant

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4304 Posts

Response Posted - 01/22/2011 : 19:35:45

Get one of these and solve all your problems. CHEAP!, portable, easily cleaned, never have to pump out, no odor, etc...

Oh yeah, can be used for double duty (no pun intended), "port-potty" and in an emergency can be used to bail water.

http://www.google.com/products/catalog?q=Tidy+Cats&rls=com.microsoft:en-us:IE-SearchBox&oe=&um=1&ie=UTF-8&cid=5723671713567777975&ei=IZM7TfJVjKvwBvqFmZcK&sa=X&oi=product_catalog_result&ct=result&resnum=12&ved=0CI8BEPMCMAs#

Edited by - GaryB on 01/22/2011 19:39:28

dmpilc
Master Marine Consultant

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4593 Posts

Response Posted - 01/23/2011 : 07:08:08

Check it out, Dometic 965 MSD 5 gal holding tank, $112:
http://www.hodgesmarine.com/ProductDetails.asp?ProductCode=DOM311196502&click=18

Edited by - dmpilc on 01/23/2011 07:09:50

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