jeremy-ca wrote:
> Machine shops charge set up time as well as actual machining, it could get
> expensive.
Round here I'd expect to get it done for about the price of 1 MRF150. My
view is that's a good investment.
> One simple way to be sure a surface is flat is to lay a sheet of wet/dry
> sandpaper on a flat pane of glass. Use plenty of water and a back and forth
> motion with moderate pressure. You may need another pair of hands.
Works well - the purist cabinet makers who want precision surfaces on
planes and chisels swear by 1" float glass. I used mirrored glass on
laminate finish kitchen worktop. The mirroring shows if the glass
surface is not flat.
>
> I use this method on old warped carburetor bowls, aluminum timing covers,
> etc for antique Ford flathead V8's that I rebuild. It also works great on
> rotator housings.
The only downside is the large surface area of heatsinks if there's any
appreciable metal to remove. It took a lot of beer to get a jack plane
finished :-)
Steve
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