One of our club instructors showed me a method that works well. Go to
the local hobby shop and buy a piece of brass angle, 1/8" X 1/8" X
12". Take the broken rail off of the canopy. Position the broken
pieces together and lay the brass angle on the corner edge of the rail
so that it will sit opposite of the sliding window and face inside the
canopy (toward the pilot not the canopy) when the rail is place. Cut
the brass to length so that there is plenty of surface area to bond
against the broken pieces. You may choose to cover the entire
length. If you need to notch out the brass where it meets a screw
hole, notch it with a file. With every thing lined up, glue it in
place with epoxy; take care not to get glue in the screw threads. The
other glues may work fine, we have always used epoxy. Let dry
completely and re-install the rail. Be careful not to over tighten
the screws. You won't be bothered by the brass when you fly because
it is located at a place where the thick rail distorts the view
anyway, so you won't notice a difference. This will hold for a long
time while you order a new rail. When the new rail arrives, give the
patched rail to someone that needs it or save it for next time a rail
breaks.

Jim DeRubeis
Greater Houston Soaring Association

On Mar 22, 10:51 pm, "bumper" wrote:
If the crack is close fitting and tight, then a water thin solvent cement
may be best, as it will "wick" into the crack to provide a maximum surface
area bond.

http://www.craftics.com/products.cfm?Category=80

The cement you mention is good too, as it has an acrylic filler it should be
better for bonding slight gaps.

In any case, it is advisable to remove the window track before gluing to
prevent glue getting on the canopy proper - - it will mar clear plexi if it
gets on the wrong spot. To help prevent this, the water thin solvent cement
is best applied with a syringe or similar as it takes very little.

bumper

McMaster Carr is also a source for this cement."Jim Vincent" wrote in message

. ..





On my canopy side vent, one of the brackets broke where it meets the
rectangular vent. I tried super glue, epoxy, plexi sealant from
Lowe's...no luck.

Fixed it beautifully using Weld-On glue, available from
http://www.stewmac.com/shop/Glues,_a...nding_adhesive...

Glue is $5.10 plus $8.25 shipping.