Submitted by Greg Harrington
Categories: [Finishing] [Reference Charts]
I am in the process of organizing a messy shop (mine). Among the many things that need to be tidied up is an array of sanding sheets that I have either purchased from vendors or as part of auction lots (from donations to the ship model club).
I’ve had a problem with the sheets curling. I intend to put them in hanging file folders. My cabinet has an adjustable follower-plate that can be used to keep the sheets relatively flat.
To file them in order, they need to be sorted by grit size. I found discrepancies while looking for a comparison chart online. Instead of ANSI-FEPA or FEPA-ANSI charts, I searched out the specifications for each standard. I searched for sources that are reliable as possible for free online content. With the sizes for each standard, I created my own chart based on my own arbitrary but reasonable criteria. I identified the nearest grit size within the limits of 5% coarser and 10% finer, using Excel spreadsheet formulas for accuracy/consistency.
|
1 27665_5ba197-80> |
2 27665_ed055d-e5> |
|
3 27665_6df5b7-ad> |
4 27665_a9c4e5-ed> |
| FEPA | microns | ANSI | microns | |
|---|---|---|---|---|
| P4000 | 8.40 | — | 1200 | 6.50 |
| P2000 | 10.30 | — | 1000 | 9.20 |
Sources: