AT-300 lathe-mill-drill, cross slide and saddle testing - 1

[@claeswikberg8958]

If you dont mind, gooing through it step by step would make a great playlist

[@jansverrehaugjord9934]

I will try to cover the steps, yes :)

[@LazTLaz]

I'm impressed that it's as flat as it is. Will be interesting to see how square it is too.

[@jansverrehaugjord9934]

So far it looks OK :) There are certain "useful as reference areas" and I want to test first how (good) the surfaces relate to each other. Then the rest will an easier task.

[@ericmiller5559]

Excellent project, thanks for sharing. I would suggest on the initial printing, the workpiece should be stoned nicely. Then when you place it on the surface plate to print it that you try to hold one side only so as not to induce a false reading due to inconsistent pressure. Additionally, you should hold it by each end and swing it back and forth to see where it pivots verifying your high spots. At least that's what I learned in Richards scraping class and read in the Connelly book of machine tool reconditioning.

[@jansverrehaugjord9934]

Thnks. Agree, always stone before any "unknown" piece is brought to the measurement surface. I did this here also, but on one of the sides still had a high spot (possibly from overtightening the T-nuts or a bump to the compound. .could be when the machine fell over and broke the cross feed handle). Anyhow, the sharp edges were taken down.. this is the key point. A high spot like shown can take much more stoning, but you wont know before testing. I wouldn't stone harder than taking down more than the sharp edges anyway.. this is true also for stoning inbetween the scraping cycles where you (normally) leave a burr. if you get carried away wih stoning, you may lose some of the scraped surface finish. Of course, I also do the "hinge test", thanks for pointing out. :) PS! You may find I am skipping other parts too.. maybe a fault on my side not showing all steps (I didn't realize that I may have some new viewers not looking at the former videos), but as I have shown these steps several times before in other series eg. when restoring Myfords etc. I may have left these out here. Sorry about that. Yes, as Eric here points out, you always follow the "rules of scraping" as we have been taught. This is the best way (probably not the only way, but).. one that is guarenteed to guide you through the scraping process to predictable results in an efficient way. Learn the basics and stick with this.. if you get into trouble, revert to the "manual" and go through this again.. you might find that you have missd out on or forgotten something :)

[@artmckay6704]

Thank you for sharing! :)

[@jansverrehaugjord9934]

You're welcome.

[@artmckay6704]

@@jansverrehaugjord9934 :)

[@tornaciyiz]

مفيد

[@jansverrehaugjord9934]

Thnks