Follow-up on gluing neoptrene to glass

>>>>> >>> >>>> >>>>> I need to glue glass to neoprene or maybe it is is some other black, >>>>> glossy, flexible, rubber-looking substance. What glue etc. should I >>>>> buy? >>>>>... >>>>> My new-to-me 2000 Toyota Solara Convertible all of a sudden came >>>>> unglued at the top of the rear window. The window is glass and shows >>>>> no sign of any adhesive having been used. Maybe they used heat >>>>> alone?? It's in the 60's here for a few more days, and I have a heat >>>>> gun if you think that will help. >>>>> >>>>> The other piece would be under tension if I glued it just where it >>>>> was, but if I leave 1/2" not glued, it will reach. >>>>> >>>>> Alternatively, I could maybe find some thick black plastic sheeting >>>>> and glue one end to the window and the other end to the neoprene. >>>>> Which is better? >>>>> >>>>> Maybe I can put a couple pillows on top of the rear seat, and lay a >>>>> 2x4 (or 1x6 which I would have to buy if you think it's worth it) on >>>>> top of the pillows, and gently lower the top so that the neoprene/ >>>>> glass rests on the wood board, and then put weights on top of the >>>>> glass while it sets. Good idea? >>>>> >>>>> >>>>> Every other convertible I've had had a vinyl "lower boot" under the >>>>> rear window, which safely collected the water. I pioneered putting a >>>>> drain hose in the boot, when I r ealized leaks could not be avoided. >>>>> Years later, the '84 Lebaron came with drain hoses factory installed, >>>>> and the 88 and 95 had them also. Unfortunately, the lower well in >>>>> this car isn't vinyl but is that fuzzy-covered cardboard, and it won't >>>>> do well if it gets wet, plus it will leak into the areas below it. I >>>>> think Toyota didn't plan ahead. >>>>> >>>>> Thanks. >>>> >>>> my corvette convertible glass window came unattached from the top, which >>>> is some kind of plastic coated fabric cloth. >>>> >>>> i used 3m VHB tape. it comes in a roll, is double sided, and very >>>> sticky. if you put it somewhere, it will NOT be coming off or allow you >>>> to reposition it. >>> >>> Well, based on your experience and what you say and what I've been >>> reading now, it sounds pretty good. > >Thanks for answering! > >>it's been 4 years now, in phx, so has a lot of heat/sunlight but not >>very much rain. it's still 100% stuck, and waterproof. > >Wow, that's great. >.... >The problem is worse t han I imagined. I hadn't had the top down >since I noticed the problem and it made a big thump twice when I >lowered it, then one more time when I raised it again. They scared >me. > >It turns out the window is so far forward it gets caught on the upper >rear edge/corner of the back seat. When the cloth was attached, it >was like a ramp. The second time I lowered it, I was in the >back seat, I went in little steps, and I pushed it back when it got to >the seat back. Going up I went slow, but if this doesn't get fixed >right away, I'll make some sort of ramp for putting it up. > >>> Does it have a liner on both sides, so I can cut it to fit without it >>> getting stuck on the scissors? And so I can put it on with less >>> trouble? (I would make my own liner for the unlined side, but I >>> guess it would stick to the tape!) >> >>it has a wax paper type on both sides. you peel off one side, lay it in >>place, peel off the other side, and touch the 2nd surface. press down a >>bit, and it's stuck. no need for clamping or any great pressure. > >Great.

Thansk again Chaniarts, for this suggestion. (P&M)

It tuns out what I ended up buying had the 3M logo on the backing tape, but it only had tape on 1 side. And it was vinyl tape, not anything like waxed paper, though I think I also read somewhere else about waxed paper. It was indeed harder to use with only one side lined, but I think all in all it came out well, and I think I was able to avoid sticking the untaped side to anything, for the most part, or at least it was still sticky when I pulled small parts up (with the backing tape) to move them.

A reason my window might have been harder to do than yours is that the vinyl went under the window, so I had to put the tape in place while I was in the back seat. Of course the center of the window is easy, but I tried to run the tape as far to the side as it would go. I cut

36" pieces.

Another problem is that my window is rounded at the upper corners and the tape is straight!! I could have cut several pieces and put them at different angles, but I didn't. For various reasons, I'm the only one who will notice this.

I did note that if I touched the surface 3 or 4 times, it wasn't sticky anymore, and that was with clean hands. Maybe I should have washed them immediately before to get rid of my fingerprints. I also am undecided if the 4910 is as sticky as adhesive mouse traps. One would think they would be the same stuff or stickier.

>> And is there any way I can get some without spending 72 dollars? >>> Although I will if I have to. >> >>i use it in my glass work, so had some although i'm out currently. i use >>it to attach glass art pieces to backing (metal, granite, etc) displays.

I have some left, that I think will have a lot of uses. Right now, I bought a ScanGauge II, and there is no good place to mount the little thing, but though Imay use the Velcro for a while, I think I will switch to this tape for a firmer and more professional-looking install.

Back to the window, it originally had an overlap of one inch, but without tugging the overlap was at most between 1/2 and 3/4. Since the window was held up in other ways, and wasn't sagging even without any support from the top, I saw no point to tugging on the cloth/vinyl at the top, and making separation more likely.

So I figured it woull overlap between 1/2 and 3/4. That would leave some of the tape showing if I bought 3/4 inch tape, and even more if I bought 1 inch tape.

I ended up putting two widths of one inch tape on the vinyl, facing up, and one 1-inch width of tape on the top of the glass, facing up.

Then I cut a strip of black convertible top material^^^ 36" by 3.5".

After attaching the vinyl curtain from the bottom, as originally planned, I think put that 3.5 inch strip of convertible top on from the top, even at the bottom with the bottom of the VHB tape on the window. I also stuck the strip to the VHB tape that was stuck to the vinyl curtain. The width of the three pieces of VHB tape was about

2.5 inches, but I made the strip 3.5 inches so it went all the way up between the convertible top and the rear window curtain.

So the window is sandwiched in between two layers of vinyl, one that is the curtain and one that is taped firmly to the curtain.

It looks good, but I haven't lowered the top yet. Too cold (58) and cloudy to want to. But Monday will be sunny they say and in the 60's.

^^^The convertible top material came from my '73 Buick Centurion convertible, that I had from about 1980 to 1987. I had a new top put on about 1982, and I might have replaced the original top, so the fabric I used this week was 38 years old. And still in excellent condition. I could tell that I'd cut out a similar piece before, but I forget for what.

This is why I try never to throw away anything. If I needed a strip of convertible top material, they dont' sell 4 inches anywhere. Or even a yard at a fabirc store. I'd have to go to a top shop and beg.

More below.

>> Now much did you buy, and if it wasn't that much, where did you buy >>> it? Maybe they only sell one kind, which would make it easy for me. >> >>i used >> >This is great. My friend runs a ministorage, and gets all sorts of >related or semi-related catalogs in the mail, and when I called her >she suggested Uline. I think she's bought from them. She had already >given me an old catalog. Had I ordered before 6 today, they would >have delivered it tomorrow. > >The white color doesn't clash with anything?? Regardless, I think it >would with my car, because some of it will show. (The rear window >opening in canvas top bows up and shows some of the curtain above the >window) > >Yours is only 44 dollarrs plus shipping, but I thought clear would be >better for me, and it's 91 dollars plus shipping... No, somehow you >found 36 yard rolls, and I had only found 72 yard rolls, but now >starting with your page, I found a 36 yard roll for 50 dollars.

At the same vendor, your link went to 36 yard rolls. but the catalog I used and the link I found with it only went to 72 yard rolls. How strange!

I didn't actually use 4622, because iirc it is white. I used 4910, which is clear. It is also 40 mils thick and the store webpage I ended up using gave a strenth measurement, and it was 10 or 15% more adhesive than the 20 mils.

I ended up buying from Grainger.com, which has a lot of stores around here, Maryland, but also ships all over the world, I think. I think you have to have a business or a friend with one.

They had 5, 15, and 36 yards, but maybe not in every kind and widtht!

It was only 20 dollars for 5 years of 1/2", 30 for 3/4", and 40 for

1". I have about 2 yards left over.

I'm not sure even the 3M site mentioned all these sizes.

There were the two guys on ebay who said they took big rolls and made small affordable rolls, and that implied the tape had backing on both sides. But my 5 yard roll didn't. So I guess there are a lot of ways this stuff is packaged.

Thanks a lot,

MM

. By >now that sounds cheap. > > > What do you think about this stuff? Should it work just as well? > >
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> This stuff, the 4910 it says is good for "Transparent materials; > glass, acrylic." > Yours says it's good for "Metals, glass, plastic.". > > Also, this is 40 mils, and they also have in 20 mils. Do you > think thinner be better, or not as good? >
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> > > >**Still 91 dollars is better than the 650 the shop wanted for a new >rear window and curtain. > >>you probably don't need 36 yards though. you could always sell the rest >>of the roll on ebay per foot and make back more than it cost. lots of >>people need this but don't want a whole roll. > >You're right, I could even make money (but I'll never do it. I'm good >at saving money but not so good at making it.) > >>you might try calling a car window repair shop, or if near a large body >>of water, a place that repairs boats. it's used to hold boat and car >>windshields in in some places. > >Good idea. Baltimore is on the Chesapeake Bay >The autoshop is a good idea. too. > I'll call tomorrow. ( Maybe not, since it's only $50 now.) > >It's supposed to rain Thursday, and unless I find it at a local boat >or autoshop, I can't fix it before then, but I found when I'm parked I >can stuff a big garbage bag between the top and the rear curtain, >overlapping the opening, that will keep the rain out. I already know >that when I'm moving, the rain blows over the car, doesn't even get >the back seat wet when it's raining, so I only have to worry about >being stopped at red lights. I can avoid that for one day. Maybe if >I go slow, I can even drive with the garbage bag hanging out a few >inches. > >BTW, I spent a lot of time on the web and found on Ebay two people who >bought big rolls and made small rolls, just like you suggested, that >they sold for 20 dollars or less, but they were either white or grey. > >Thanks a lot. > >>> Also, there seems to be at least 15 kinds. Black and clear (and >>> white), different thicknesses, conformable, and bond specific >>> surfaces. >>>
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>>> Do you know what exactly you used? I'm sorry I'm such a pain. >>> If it weren't so expensive, I wouldn't ask so many questions. >>> >>> 3M has this page: >>>

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>>> I clicked on sort by price, but it didnt' sort by price. It had a >>> few reolls for under 50 dollars. Also it shows non-tapes, but I >>> couldn't get rid of them. >>>

>> Googling, I find a lot of people trying to find small amounts, and >>> other people recommending 3M molding tape, but you have to let it set >>> overnight, without any moving. I doubt I can do that. . >>> >>> >>> >>> The 72 dollar roll is narrow too. 1/4 inch? I'd rather have a shorter >>> roll of wider stuff. If I run two narrow strips side by side, and >>> they don't match perfectly, do you think it will be very visible >>> (very? at all?) through the glass (I won't buy white) ? >>> >>> >>> Thanks a lotl >>> >>> P.S. Office Depot has it, but it costs between $700 and $2500!!
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micky
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