[cujobob]

I'll try to get a picture up shortly.

I ordered a pair of Response Audio's demo GR Research OB7s last year...and they arrived severely cracked thanks to UPS....right on the baffle, inbetween the lower midrange woofer.

I have a replacement driver ready to go, but what can I do to stabilize the MDF and repair it?

[WGH]

Tape one side with clear packaging or masking tape then carefully fill the crack with a thin penetrating epoxy like West System. I use the 105/205 resin and hardener. The resulting repair will be stronger than the surrounding MDF. Sand the repair smooth, repaint and the speakers will be better than new.

Wayne

[Christof]

Tape one side with clear packaging or masking tape then carefully fill the crack with a thin penetrating epoxy like West System. I use the 105/205 resin and hardener. The resulting repair will be stronger than the surrounding MDF. Sand the repair smooth, repaint and the speakers will be better than new.

Wayne

+2....I pick it up locally at West Marine store....you should have one near by you in MI....you might want to pick up a small G/Flex kit which has everything you need including thickener.

Hey Wayne, are you using G/5 +pigment for knots or 105/205 or both?

[WGH]

Howdy Chris - I start with the 105/205 tinted with black paint pigment to fill cracks and glue knots. Mesquite is an open pored wood so I try to do most of my filling before final milling because the black epoxy also fills in the surrounding pores and leaves a dark shadow around the cracks and knots. Once the wood is milled and sanded there are always more cracks and voids to be filled so I switch to G5 which sets up in 3 minutes so it doesn't soak in as much which means the dark shadow is not very deep and can be sanded out.

Wayne

[Christof]

Howdy Chris - I start with the 105/205 tinted with black paint pigment to fill cracks and glue knots. Mesquite is an open pored wood so I try to do most of my filling before final milling because the black epoxy also fills in the surrounding pores and leaves a dark shadow around the cracks and knots. Once the wood is milled and sanded there are always more cracks and voids to be filled so I switch to G5 which sets up in 3 minutes so it doesn't soak in as much which means the dark shadow is not very deep and can be sanded out.

Wayne

Cool, Thanks