Here’s the products I’ve used for my own version of Plaster Magic. The cost is about 1/5 of the Plaster Magic and I get all of it from Menards, Lowe’s or Home Depot.
- Package of 1.5-2" nylon washers - for against the crack
- Package of large 1-1.5" fender washers - to back up the nylon washers
- Acrylic masonry bonding additive, diluted with water if needed. This stuff is nearly identical to the “conditioner” Wally’s sells for $32 a bottle.
- Loctite Polyseamseal White All Purpose Adhesive Caulk - I dilute this with water to a little thicker than white glue and inject it with an old caulk tube or a turkey injector
I’ve tried several other adhesives and caulks, but this one performs flawlessly. It’s not identical to Wally’s but it works really well. Best to wipe any oozing adhesive up when you first make the repair rather than scraping it off later.