|
I've had a good amount of experience with drywall, but very limited with lath and plaster, so take this advice with a healthy grain of salt.
The first thing you'll want to do is tape along the area you wish to cut with blue tape. The tape won't stop all the dust, but I have to imagine that it could reduce the amount of plaster that breaks off and it could prevent cracking. If it were me, I'd use a rotozip with a strong bit for the plaster, then a saw for the wood. You could duct tape a shop vac to the underside of the rotozip, which could help further reduce the amount of plaster dust assuming you don't have the dust catcher.
Be safe!
|