So I haven’t built an A-frame printer in 3 years. Other than the moronic spirit-level-and-plumb-line method, how are people going about squaring their axes these days?
I’ve been looking through docs, and I see recommendations for using a carpenter’s square to square the Z rods along the X/Z plane, but nothing to square them along the X/Y or the Y/Z plane other than measuring the distance along the edges of the machine to where the rods intersect.
Skepticism of the precision aside, this seems like it would lead to heritable error: If you build the machine from parts printed on a machine that is not square, the child machine will be a parallelogram that exhibits the same non-squareness and pass it on to any parts printed on it.
Despite the use of rigid square extrusions, the Mendelmax is not immune from this effect because it’s made up of metal-to-plastic joints rather than metal-to-metal.
Wallace (like the printrbot, which inspired it) was particularly vulnerable to this, and it’s one of the many things I’m trying to fix in Wallace 2.