Cooler hydro build

Indoor Growing Hydroponics
#21

Strangely, I went over the outside and inside pretty carefully and can’t turn up a model number, or even a model. Just “Igloo” stamped in a couple of places on the sides and bottom.

I did get this response from Igloo:

The exterior body of most Igloo hard-side coolers is made of high-density polyethylene, while the interior liner is made of FDA-grade polypropylene. The insulation is made of Ultratherm™ - a proprietary blend of polyurethane foam.

So it looks like the search is on for an effective polyprop adhesive. Chime in with your favorite.

#22

throwing the drill in reverse to cut the holes also helps with a clean cut. Not sure its so great for the hole saw though

2 Likes
#23

When thinking low surface energy materials, think teflon. Stuff just doesn’t like to stick to it. Low surface energy material are difficult materials to bond in a reliable fashion.

Take a look at the following for products that are likely to be available via the big box stores or ACE hardware:

Though, I do question how well such consumer grade product works long term. I’ve used some of those for a whole variety of situations but try to avoid them for bonds that are ‘critical’ where a failure could cause other more significant problems. The better stuff is classed as engineering adhesives. For instance,

3M Scotch-Weld Low Surface Energy (LSE) Plastic Bonding Adhesives

These work for pp and pe and are designed specifically for such materials.

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#24

I’m going with “J-B Weld 50133 Plastic Bonder Structural Adhesive”. Alleged to work on both HDPE and Polyprop and waterproof.

5 Likes