On Sat, 19 Jun 2010 19:40:00 -0400, aemeijers wrote:

I'd buy a package of cheap sawzall blades at HF, and use those. If you
don't have a sawzall, the same blades fit most manual drywall saws.
(Did a real Huh? when I realized that one....)
Get real long blades so they can flex to lie flat. Use the plastic from a cut up
clorox bottle to protect the concrete under the end of the blade.

Tried several saw blades. The stuff shreds, jams the teeth, saw slows
way down 'till ya clean out the teeth, takes too long.

I finally got it done by repeatedly wd-40-ing a utility knife
blade, scoring repeatedly both sides, then using a serrated steak knife
for the final slice. This, out in the hot, hot sun, with the
damned red ants crawling all over the place. Super-PITA!!

Thx,
Will

Too bad we don't have a FAQ for this group- you coulda documented it
all, and ensured your place in history.

(Hey, we all do dumb things sometimes- I'd say the DIY gods have
punished you enough for your memory lapse on this one.)

Bet you won't forget to place the black strips first next time you pour
concrete. :^)

I'd have 'em flawlessly layed out, cut, and placed before the first
bag of premix was opened.

But I over-spec'd my capacity for the work. Will never, ever
attempt such (alone) again. Pure foolishness on my part. Too
damned old ...

Will