Has anyone used parallels to sit on the waste board to raise the work piece so when contours are done it doesn’t cut into waste board
Yes, those or a supplemental spoilboard.
For my projects, I often use railroad board (basically, thick cardstock) under the work as a sacrificial matte. Or for projects where I want more play, I’ll use hardboard (i.e. HDF, High-Density Fiberboard) instead.
I’ve been scolded and told that the wasteboard is supposed to be cut into, not preserved. I reject that as oversimplification. I do consider my wasteboard setup a wear item that I can fairly easily replace, but using a cheap and easy dimensionally-consistent sacrificial layer greatly extends my wasteboard time between surfacing or replacement.
That’s not to say everything is perfect. The tape-and-superglue method of workholding is not available when using railroad board, for example. I imagine it’s probably not the most appropriate approach for projects that have you making shiny chips and saying “thou” a lot. Still, it’s another approach that can be useful, at least for some people and projects.
That would work.
Supporting it well enough to ensure sag or tool pressure doesn’t impact ability to cut clean through.
Just came across and added this to the wiki:
I keep a bunch of squares of tempered HDF (about 1 inch square) around for exactly this. Then if I cut into them (which sometimes happens) they are super cheap and I don’t care. I can cut them as needed to fit the project when I need to, a little here, a little there, and they don’t compress…