JB Weld

I fixed a 90 size heli engine with a hole in the crankcase with JB .It was for a mate who deals in rubbish and I didn’t think it stood any chance of working .It was compleatly successful and has lasted for many flights so far

Alan

You’ve all convinced me. JB Weld on order

Just make sure you mix the Hell out of it and when you think you're done, mix it some more! Like all epoxies in fact, but that's the only safety measure for getting a great result. The beauty of one black one white resin is that mixing means a nice even grey is your best guide.

Best of luck.

Martin

Will report back when done

JB weld will work just remember to mix accurately and well and where you want it stuck lightly key the surface and make sure it grease and dust free.

used it a lot on that Hanriot of mine cabines and undercarriage parts takes a week in a warm place to competly cure to full strength ( ie 90 odd percent on a day rest over a few days

Like epoxies generally it will react well to a gentle heat. A desk lamp with a proper bulb, not one of those silly spaghetti things. 30 watts in an Anglepoise will do nicely. Works a treat on Milliput too. Milliput won't go fully hard without some heat.

Martin

I wish all epoxies were like that ie with different colours for the adhesive and the hardener. First it makes it easier to know when it's thoroughly mixed and, second, it saves confusion when you can't remember if you've squeezed out hardener or adhesive. 2 squirts of either rather than one of each doesn't make for a good result

JB Weld is certainly very slow to cur properly. Well over a day IIRC. Surprised Cymaz has had to send off for it because it's available over the counter in our local car spares shops - and in our small market town, not in a city.

Geoff

Indeed, a coloured second half would help on some epoxies. JBWeld off the 'net is probably, like most things, much cheaper. I paid over £4 for a tube of Evo-Stik from a shop (the only one in a large town) because I had to have some to finish a job, but my wife then got me 5 packs for the equivalent of £2-50 a tube off ebay. That is why shops are dying. I know the online shops have no overheads, but £4 for a tube is stupid. If it was £3 I would stick with the shop, but £4? No, too much extra.

Give it a little heat. I put some on a model car last night, put it under the lamp today and it's hard as rock now. brass on plastic.

M

Would JB Weld be suitable as an adhesive sticking ply formers to a "blown" plastic fuselage ?
Not glass & epoxy/polyester resin but a similar type of plastic as used for the Phoenix glider etc.

The only thing it won't stick is polythene, like everything else. If your fuselage is styrene or more likely ABS, give it a good scratch up for a key and you'll be fine.

If it can stick the magnesium sump of a Maserati 4.5Litre V8 in a Cooper Racing car it can mend a toy aeroplane!

Martin