No, these numbers are just used to get the calibration process started. The machine will find it’s own exact dimensions at the end of the process.
you can buy 8’ 2x4s, or you can buy studs that are designed for 8’ rooms where
they know that you will have a top and bottom plate in the wall framing, so they
sell them to you just a little shorter so that the finished wall is 8’ tall
without you having to cut every stud (I think it’s actually 8’ 1/2" so that you
can easily fit the 4’ wide drywall panels and the bottom edge is covered by your
flooring and baseboard)
David Lang
Richard McCoy wrote:
I want to be able to cut the full size of 4 x 8 sheet of plywood all the way to the edges if needed.
it turns out that the maslow4 needs a bigger frame to cut a full size sheet than
we all thought (there is a limitation that nobody realized until a few days
ago), see http://lang.hm/maslow/maslow4_frame.html to play around with different
size frames to see what cutting area you have for any size frame.
the purpose of calibration is to figure out what your actual frame size is, but
if you try to calibrate in an area that is outside the green area of that image,
that point will be incorrect because the arms will hit the plastic frame around
the router and so instead of the belt+arms being a straight line, they are two
sides of a triangle and we don’t know the angle betwen them, so can’t figure out
what the real length of the 3rd side is.
when cutting, you can cheat into this area a little bit (it’s a small error for
small angles), but when calibrating, it will throw off the calculations.
David Lang
Richard McCoy wrote:
My frame is definitely bigger than the cutting area.
the cutable area on that frame may be smaller than you think it is. the frame
needs to be enough bigger that the arms will not be limited by the uprights at
any point. This can happen top and sides as the angle between belts to the
adjacent anchors gets wide (that frame looks like a 10x8 frame, so it’s probably
happening at the side centers) and it can also happen in the corners where the
angle between the opposite corners gets narrower.
David Lang