Gallery, Projects and General > How do I??
Quartz Surface Plate?
sparky961:
Any idea if their free shipping works for Canadian addresses too? With the very low Canadian dollar right now, it'd have to be one heck of a deal.
gerritv:
Their 12"x9" is USD43.43 so the Busy Bee one is still a better value.
KBC Tools has them at CA$53 and seems to use $8.95 flat rate shipping for a 33lb lump. Might be worth a call to verify that?
You also could get a US Address in Niagara Falls, NY though if you want to use Enco. CBI is a good place.
And then enjoy some wine and lunch at one of the 50+ wineries in the Niagara Region on the way home :-)
tom osselton:
I have been thinking about getting the busybee one and am wondering if anyone has asked about if a bigger size was available from them I'll ask next time I'm there.
PekkaNF:
Has anybody measured or questimated how inaccurate substitute surface plates are?
I have trouble with my milling machine, basically screws/nuts etc are ok, but I have used all adjustement range on tapered gibs. That is not that big problem, but ways are way out of specs long ago.
I would like to asses the flatness of the milling machine table and only reliable way I can figure out where I can do it repeatedly is fairly large surface plate.
The milling machine table is 1000*250 mm and about 75 mm thick + dove tails etc.
This large surface plates are not something that are sent on mail routinely and the ones that are made for industry are not only wonderfull piece, but also way out of my buged.
Anything better than 0,01 mm / 1000 mm would be a big improvement. I have seen float glass mentioned. Also epoxy granite countertops. Granite countertops? They would need pretty substantial base because the milling table must weight something like 100 kg and the table should not deflect much under this load.
I have small 200*300 very thick surface plate that came with an inspection report and it is pretty close to flawless that I can tell. 1/10:th of accuracy would make verry happy on this larger scale.
Any suggestions?
Pekka
* Small update...I have about 250 *600 mm granite table top offcut in the garden. It looked straight, I put 600 mm long parallel to it and mounted DTI on magnetic base and run test...Showed close to 0,1 mm swing. Magnetic base was small and DTI was offset, but least that piece was not very flat.
sparky961:
My plan, if I find some decent pieces, is to lap three of them together in succession in order to end up with 3 "perfectly" flat surfaces. I figure starting with something reasonably flat will reduce the amount of lapping needed but it still may require some brew and media to make the process a bit more fun.
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