I want to buy a utility knife, but I don't know what are the advantages of snap-off blade knife over trapezoid blade and vice versa.
When to use snap-off blade knife and when to use trapezoid blade knife
cutting
Related Solutions
It sounds like you're using a crappy copper pipe cutter. To cut PVC, you want one of these instead:
I've used mine to cut thousands of PVC pipes and it does the job quickly and easily. You can probably find one for less than $10 and it will serve you well for life.
Take a 2x4 or other long straight edge, and stand on it to compress the pad and stabilize it, then use your utility knife to cut it.
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Best Answer
Trapezoid razor blades are stronger, so they can be used for cutting thick or very tough materials better than snapping blades. Examples where I use this blade:
Snapping blades are super convenient when making lots of cuts on materials that dull or gum up blades quick and the material isn’t really thick or tough.