hi Craig, thanks for all the advice! surely appreciated!
Yes all the mold/release agent/EG have to be thoroughly tested!
about the inspection equipment, yes I have a granite surface plate (not big enough for this build but big enough for my need), I have a granite high precision 750mm parallel (this thing cost me a kidney, I needed it on my other machine build) and I have a high precision granite square 250*400mm that will be my master square for this build. I've lots of dial indicators both 0.001mm and 0.01mm so I'm good with inspection stuff.
I'll just mill them flat, my friend already milled the base of my other machine (just where the ways seated of course), a 1100mm*800mm base, he has a large surface plate also at the end of milling he inspected the flatness of the milled part and it was within 0.002mm... those are high-quality german mold making machines, not just big machines...
yes about the spindle I think I'll be more than good... better be for the price of the stuff I'm putting on it... 1250usd for the spindle and 1500usd for the motor/drive combo...
yeah the metal way cover where bugging me a little, the chinese covers actually look very nice also and will do the job just fine... and the price is just about the cost of 1 or maybe 2 metal way covers... plus the effort of making the mount system and parts I would need to make myself to keep the price low... in the end, math made, the price of 1 metal cover would be more than enough for all the chinese ones... so I won't be thinking on that anymore there's just no choice to be made....
well got go to work...