[mura_gadi (Steve)]

Thanks Rod,

Just poured a lap with mixed results, failed when I applied too much pressure too soon to the pitch and lost a lot of my main square channelling.

However, made a major score, remembered I had read about John D Upton using a "hot channel cutter" with good success.

Chopped the end off a medium screw driver and hit it with a blow torch. About 10sec of heating near the blue tip and it ate out the channels for about 1/2 the horizontal main grooves in one heat (8" lap).

Really neat, fast and without any mess. (I used a very long smooth tapering on the screwdriver end)

Hassles with rechannel are no longer an issue! Tyvm for your reply.

*********************************** ********************

In regards to the Stanley knife approach, have you tried metal flyscreens for a cold press fine groove on the squares? (or the green shade cloths?). I have just used a Stanley but wanted to try the flyscreen and forgot. Might be too uniform is my only thought.



Thanks
MG

PS. Nice tips for the tar breaking due to uneven defrosting rates, hadn't considered that at all. The wire brush I completely forgot about... must be getting to the "list" stage of life.