On Nov 3, 5:10 pm, "StarMan" wrote:
OK, basic dw question here

Taping the joints is simple and basic when it comes to two uncut edges which
are tapered and abutted.

However, in many cases, you have two CUT pieces where full-thickness edges
come together.

What is the best way to deal with these?

Adding tape and mudding over could leave a "bulge" if nothing is done.

Does one take a mallet and "ding in" the edges? Taper them somewhat with a
knife?

Also, any links to sites which tell how to deal with drywall finishing in
this way would be helpful.

Sanding a taper in drywall butt ends for nice flat joints is perfectly
practical if done outside or whatever. The argument about the the
paper top layer giving it stength is a bit off the mark, because the
real stength iis in the rock itself. The most important thing is
attaching the butt ends to the framing (or support) with extra care.
Probably the best technique is to simply use a constructioin adhesive.
For a lot of years I have tapered with a handy 7" body grinder and
used that same tool for truing up the frame member that the drywall
attaches to. End result is a quickly done joint, very flat, little or
no rework and no concerns about shadow lines from any lighting source.
Works fine for me, YMMV.

Joe