I saw this at Lowes, I think.
Amazon.com: 3M Hand-Masker 10.8-by-9-by-3.6-Inch Masking Tape Film Dispenser #M3000: Home Improvement
It applies both film and tape at the same time. In general, you'll mask faster if using a dispenser even if it's tape only. I didn't get it.
I'm painting right now too. I masked a border with post-it tape because I didn't want to risk any damage to a paper border. I can see where gizmos such as the masker would save time. I had no trouble using Post-it tape, 1" wide.
I do have very steady hands and can paint with a brush in my left or my right. When it was uncomfortable using my right, I used my left. No problem. When I was doing trim around the windows, I used a 3/8" artist's brush to get the edges and then a 1-1/4 brush. If I mess up using latex paint, I have a wet rag handy.
I just finished the ceiling and it looks gorgeous. I never painted one before. I used a short nap roller and a teflon rolling pan. Found out that TSP does an excellent job of cleaning up Latex implements.
Used my new Multimaster and a Bosch finishing sander with 80, 120 and 320 grit and MH Ready Patch. I really didn't have the lighting I needed, so I had some troubles. I also had to deal with a small water stained area.
Found a cute little edging tool called the Edge Rite Trim Pad (
www.quali-techmfg.com) from Home Depot that made doing the ceiling edging a snap.
The walls are another problem. Nail marks and two 1' long cracks in the drywall. Yep, I taped them.
While I'm at it, I'll install a low voltage box for phone and TV etc. and tamper-proof duplex Decora receptacles for the 4 non-grounded outlets.
A lot of hurry up and wait stuff.
ac: Corrolary:
If you can't find the time to do it right, when are you going to find the time to do it over.