I finally stopped using the old-school putty knife for glazing compound after a job in Denver last fall.

Switched to a 4-inch flex knife for the whole pane and it cut my time in half, plus the finish is way cleaner. Anyone else make the switch and notice less wrist strain?

3 comments

3 Comments

finleythomas21d ago

You really think a flex knife is that much better? I've tried them and they feel flimsy. For a clean line on a wood sash, a stiff putty knife gives you way more control. I can see what @black.shane means about using your arm more, but that just makes the whole motion feel sloppy to me. You lose the feel for the compound. I went back to my old knife after a week.

beth_sanchez10h ago

Wait, have you tried a flex knife on a really long run? I feel like the flimsy feeling goes away when you're not fighting the tool on a big surface.

black.shane21d ago

Honestly, the part about less wrist strain is huge. I found the flex knife lets you use more of your arm and shoulder, so your hand isn't doing all the work. Tbh, it's a game changer for bigger windows where you're laying down a lot of compound.