Originally Posted by TomW
The problem with resizing tiles is to keep the dimensions EXACT. If the resized tiles are off by much, the error will propagate over the area and there will be gaps between tiles.
Should you decide to cut tiles (I recommend a paper-cutter type of device), lay the tiles out (without glueing) in the desired area to make sure the finished appearance is pleasing.
As far as using a paper cutter...it kinda depends on the type of vinyl tiles you are cutting.
Vinyl Composition Tiles
(aka VCT) like Armstrong Excelon, are much too hard for a paper cutter - they would just crumble &/or break. I think a ceramic tile cutter is more likely to be successful as it scores the tile and you can snap it. A jigsaw would be best for scrolls or curves. VCT comes in lots & lots of colors, and they are consistent throughout the tile - not patterned, but textured looking.
or the peal-n-stick type vinyl tiles are much more thiner & flexible and could probably be cut with a paper cutter w/o dulling the blade too much. Or they can be cut with a utility knife which would be much easier for DIY scrolls & curves. Vinyl tiles are often times patterned to look like stone or wood or ceramic patterns, they are often layered with different materials.
Durability wise - VCT is much more resistant to staining &/or gouging than vinyl tiles. VCT is what you see in very heavy duty areas like grocery stores. Vinyl tiles are more residentially oriented and not as durable over time.