how do i cut a rectangle out of my installed subfloor?

[richdmb]

hey everyone,

i layed my osb subfloor panels down. now i have to cut on a rectangle for my hitting strip.
i have a circular saw where i can make a plunge cut, but i can't cut the corners without overshooting the corner and cutting into the adjacent subfloor, which i'd rather not do for stability purposes.
anyone have any suggestions on how to cleanly cut this piece of subfloor out?
i also want to keep it one whole, clean piece so i can replace it when using the area for virtual reality and what not, so i'm not stepping into a soft spot and twisting an ankle or something.

thanks!

[Kent]

A dremel or spiral saw should work on the corners.

[richdmb]

A dremel or spiral saw should work on the corners.

cool, i'll google those. thanks!

[colinjm18]

Search for multi tool it has an oscillating blade and is very easy to use. The site is based in the UK but you will be able to get them in your own country.

[envision]

You could use a jigsaw.

[richdmb]

Ill look into the multitool as well

not sure if i can use a jogsaw because thebaubfloor is already layed down onto the concrete. But maybe i can? I have minimal experience with these tools. Haha

[DistinAZ]

Can you post a pic?

[richdmb]

Have to cut out a peice from that floor as it lays there

[NVONEPUTT]

Is that the Dricore subfloor?

[richdmb]

no, it's not dricore but similar. it's amdry. i went with it because it's not as thick, and i wanted to minimize loss of height, as well as with turf on top, it would line up perfectly with my hitting strip. it was also cheaper, and it has long plastic connectors instead of a traditional tongue and groove

[DistinAZ]

Cut most of it with circular saw, set depth so it doesn't quite cut all the way through.
Then I'd cut the corners out with an oscillating saw and clean up with a box cutter if needed.

[richdmb]

Cut most of it with circular saw, set depth so it doesn't quite cut all the way through.
Then I'd cut the corners out with an oscillating saw and clean up with a box cutter if needed.

Sounds like a great plan. Thanks!!

[keither5150]

DistinAZ is correct. You may have to glue down the area surrounding the cut. You can also use a hammer and chisel to clean up the edges.

[richdmb]

thanks keither, i like those ideas too, especially the gluing down part