I thought 100 grit meant there were 100 holes per sq inch in the screen. I recently read that the 100 number is linear. 100 holes on each side of a square inch, for a total of 10,000 holes per sq inch.
If it had 100 holes per square inch, the grit would be around 1/8″.
This is all new info to me and I thought I’d pass it on to anyone that might be interested.
Don
Replies
What ARE you talking about?
Better life through Zoodles and poutine...
Don,
Does this help?
http://www.taunton.com/finewoodworking/Materials/MaterialsPDF.aspx?id=24135
Lataxe
There are also two or three scales. I know that P is one of them. I can't keep them straight.
Chris @ flairwoodworks
- Success is not the key to happines. Happiness is the key to success. If you love what you are doing, you will be successful. - Albert Schweitzer
Who else remembers when sandpaper coarseness was arranged like steel wool, by 0's?
00, spoken as "two ought" (not double-ought, that's for shotgun shells) , was the same as 100 grit, four ought was 180, if I remember rightly.
Ray, geezin' again
Some woods I've worked with - the double-ought(shot) would work better :-)
and yes some grey cells still hold the "00" memories.true old coot---another name for flatus
John
I've also heard 00 spoken as double-oh and oh-oh!Chris @ flairwoodworks
- Success is not the key to happines. Happiness is the key to success. If you love what you are doing, you will be successful. - Albert Schweitzer
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