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Mike builds a teardrop (I need some ideas)

The PTFE (which is the same thing as Teflon) strips suggested by @Malc2098 sound like a good option to me.

Another idea (that may not work): how about carefully (perhaps with a fine paintbrush) oiling the groove. The oil might prevent the epoxy from sticking and allow it to be peeled out. You'd have to test it on a bit of scrap of course as I don't know for sure that the oil would prevent the epoxy from sticking.
 
@Mike G ... how are the seal strips being fixed into the grooves?

I think this information may help others to come up with something? You've mentioned considering using putty but rejected because of the oil possibly staining the sapele timber.

I've never worked with fibreglass so have no experience of what is involved...

*I've put your question/text into Google which has come up with some suggestions plus steps for going about doing it. Would you like me to post it here?
 
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Hi Mike

There are a number of plastics you could use including polypropylene which are "slippery" I have some scrap lengths of that as I used it a lot of it for wall cladding in food prep areas for a number of businesses. I could certainly send you strips which would I suggest want to be wide enough to protrude and grip to pull out however....it's nominal 3mm thick but I'll check with a micrometer later.

You could really use any plastic or even metal strip as long as you waxed it well first or maybe thinner (even ply) and fit a strip of masking tape or parcel tape each side. The tape would be left behind to be scraped off. Even stiff cardboard perhaps if it's oiled or waxed would probably do the job. Rubber sheet like car mats iff smooth? there must be loads of possibilities with a bit of lateral thought.
 
Lons said:
There are a number of plastics you could use including polypropylene which are "slippery" ......
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That was my first thought, Bob, but I worry that if anywhere isn't a really tight fit that the epoxy will run down into the groove and give me an almighty headache. Cardboard sounds obvious, too, but if it absorbed the epoxy, again, I could have a problem.
 
Mike G said:
A "V" is pushed down into the groove. Here's the profile. It's the bit at the bottom which squeezes into the groove:

View attachment 57177
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Thanks.

Google has suggested 4 possible methods to look at Mike. I know not everyone likes the results that come up if using an AI program but these may be worth considering? As I mentioned earlier, I put in your text from your comment:
20260803_130632.jpg20260803_130647.jpg20260803_130656.jpg
 
Mike G said:
That was my first thought, Bob, but I worry that if anywhere isn't a really tight fit that the epoxy will run down into the groove and give me an almighty headache. Cardboard sounds obvious, too, but if it absorbed the epoxy, again, I could have a problem.
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A couple of your magic mix could solve the absorbtion issue maybe but getting the whole strip tight might be fiddly. What about silicone strip, something like this on Amazon? I haven't looked but there must be others.
 
Yeah, that's a thought. It should wedge in quite tightly.

I have high hopes for plasticine, but if that doesn't work, I'll give this a try.
 
AndyP said:
How expensive are those seals? Could you you trim the seal to just the bit that fits in the groove, then epoxy, remove the seal and fit a new complete one?
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Interesting thought. It's actually expensive stuff to buy in the length I need, but dirt cheap if you buy way too much. So there may be some mileage in your idea.
 
I've used polythene to prevent sticking in the past. Could you wrap something in polythene then push it into the groove. After the epoxy is set cut the polythene at the top, pull out the infil strip then pull out the polyhene - or all in one if it comes out easily.

Something that would be easy to try on a test piece before committing to it. Polythene layflat tubing is available and cheap then you need a thin strip of wood or whatever... if the idea passes testing :)
 
I've already got some Playdough here. I'll give that a try later. I worry that it may not repel the epoxy quite so well.
 
Mike G said:
Interesting thought. It's actually expensive stuff to buy in the length I need, but dirt cheap if you buy way too much. So there may be some mileage in your idea.
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I’ll let you know later @Mike G , I may have some gash pieces of Aquamac 21 or 63 seals that I had to pull out of a job, in a box somewhere, If I can find it!.
 
The rubbery foam that’s used for pipe insulation, cut up on the bandsaw to the correct size would push in nicely and don’t think it would stick to appoxy
 
Lons said:
So that's what you do in your spare time Mike :ROFLMAO:
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:ROFLMAO: The grandkids have just left.....

I've spent much of the last 3 weeks putting the lids back on Playdough pots. I didn't think that it would be for my benefit.
 
Thinking through what I said earlier my approach would be to cut strips of suitable cardboard maybe a inch wide, roll out some parcel tape sticky side up and place the cardboard strips edge down the centre of the tape then fold the tape up easch side. Lightly wax the tape and likewise the groove in the timber and push it in tight. I'd be looking for cardboard maybe 2.5 - 3mm thick which is common and pinch it a little so its a tight fit.

Very cheap solution which needs testing first but I cant see any reason why that wouldn't work and certainly won't stain the wood.
 
Mike G said:
:ROFLMAO: The grandkids have just left.....

I've spent much of the last 3 weeks putting the lids back on Playdough pots. I didn't think that it would be for my benefit.
Click to expand...
Yeah I've heard that one before. ;) I used to enjoy the playdogh and plasticine sessions but ours is well past that stage now and into expensive hobbies.
 
I would try something similar to what Lons suggests. Cut cardboard and fold it over. Then cover the outside with packing tape. Push the folded and taped cardboard into the groove. Then jam in something flexible to make sure both sides are pushed tight against the walls of the groove. Probably something like the harder type of caulking backing foam. But this would only work if the walls of the groove are not tapering outward towards the top of the groove though. I am not sure that is the case in your situation. Maybe non-slip tape instead of smooth and slippery packing tape would be something to experiment with in this scenario?
 
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