fixing plastic parts (this case the relay board cover), fixing cracked plastic Options

[eastbay851]

anybody who has a piece of broken plastic with which to deal on your car (or, i learned from continually getting off my motorcycles before they were stopped.) the best way to deal with plastic is to use baking soda and super thin super-glue. fill crack or chips with baking soda and apply glue. the preferred applicator here is a piece of tube filament. i get mine from a local hobby shop who makes their own super-glue but fly tie supply places have it. you can build up (in thin coats of baking soda) to 1/4" thick or more. i have made full loops with this method for the cowling of a motorcycle, dropped the bike again and the loop survived while the rest of the piece suffered severe trauma. one of the advantages to using this method... makes no difference what type of plastic it is. super glue does not discriminate.

[geniusanthony]

Model airplane building and CA brings up memories. The smell of glow fuel and balsa dust ( hopefully not at the same time, i.e. crashing)

Re: plastic repair, i like fiberglassing the back side and using epoxy, the hobby grade stuff. Poly resin makes for no fun and no safe. MEK and all that badness.

When fiberglass isn't an option I would like to learn plastic weld and still need to try that old model airplane cement that was acetone based. Similar to dissolving toothbrushes in solvent, I remember seeing or reading of that somewhere. I couldn't tell you where though.

[realred914]

Model airplane building and CA brings up memories. The smell of glow fuel and balsa dust ( hopefully not at the same time, i.e. crashing)

Re: plastic repair, i like fiberglassing the back side and using epoxy, the hobby grade stuff. Poly resin makes for no fun and no safe. MEK and all that badness.

When fiberglass isn't an option I would like to learn plastic weld and still need to try that old model airplane cement that was acetone based. Similar to dissolving toothbrushes in solvent, I remember seeing or reading of that somewhere. I couldn't tell you where though.

on old iron and or even a candle and on old knife can be used to weld thermoplastics some times you can 'harvest" filler material for your weld by scraping excess plastic off of on other area of the same part, thus assuring same type/ color of plastic for the repair