Reply by splintergroup

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Posted on Does cast iron flex

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6357 posts in 2559 days

#1 posted 08-28-2017 06:02 PM

It used to be that good cast iron tools (saws, mills, etc.) had their raw castings left outside for a year or so to “season” before being machined and finished. Cast iron takes time to settle down and temperature cycling speeds the process.

Now-a-days, most machine castings are machined and shipped out shortly after the casting is made. Results is warping, sometimes sever, sometimes barely noticeable. My 1999 Unisaw has a slight warp in the cast top extensions.

Yes, you can beat iron castings into a slightly different shape, but it takes some force and of course it tends to not be very elastic and will snap without much warning.

If the Griz won’t give you a new part, you can always take it to a machine shop and have them either grind it flat or sand it flat on a belt. The sanding is cheaper and gives quite good results.

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