The clear needs to be hardened up fairly good to use a razor blade regardless of brand, some of the cheapy 4-1 clears and and speed clears get hard fast and you'll be able to scrape off a run quicker but those clears are also the ones that offer short term overall lifespan and scratch and chip easily down the road. JMOrichrd;35269 said:the razor blade works better on other brands of clear thab it does on SPI. Don't try to "cut" the run off, just scrape. And I like to put a small bend in the blade, that also helps keep the corners away from the surface.
It worked for me one day. Some days I simply use trim router, and even if it was made for wood specifically, I use it for different needs time to time. I found it on this resource ( https://www.woodroutersreviews.com/best-trim-router/ ) and it's called MAKITA XTR01Z BRUSHLESS CORDLESS ROUTER. I like it cause it is lightweight and very portable.Meguiars makes little stone blocks that work really good.
They're only about 2"x1" in size and can be easily
sanded back flat from usage.
You can "feel" the run with them and sand it without doing much
sanding to the surrounding area.
1000 grit is the coarsest grit they come in but it
works real good with soapy water.
The hardness of the stone gets it really flat.