When looking for mesh to build the tumbler i started lookin at silkscreen. Well silkscreen is measured in whats called mesh, which is threads per inch. The info on hash bags or the like is measured in microns. A micron is one-millionth of a meter or one twenty-five thousandth of an inch. After tripping around this internet thing for a while I came across this info. Thought maybe others might find it useful.
MESH TO MICRON CONVERSION CHART
MESH -INCHES- MICRONS - MILLIMETERS
3 --- 0.2650--- 6730--- 6.730
4 --- 0.1870 --- 4760 --- 4.760
5 --- 0.1570- -- 4000 --- 4.000
6 --- 0.1320 --- 3360 --- 3.360
7 --- 0.1110 --- 2830 --- 2.830
8 --- 0.0937 --- 2380 --- 2.380
10 --- 0.0787- -- 2000 --- 2.000
12 --- 0.0661 --- 1680 --- 1.680
14 --- 0.0555 --- 1410 --- 1.410
16 --- 0.0469 --- 1190 --- 1.190
18 --- 0.0394--- 1000 ---1.000
20 ---0.0331 --- 841--- 0.841
25 --- 0.0280 --- 707--0.707
30 --- 0.0232--- 595 --- 0.595
35 --- 0.0197--- 500 --- 0.500
40 --- 0.0165 --- 400 --- 0.400
45 --- 0.0138--- 354 --- 0.354
50 --- 0.0117--- 297 --- 0.297
60 --- 0.0098--- 250 --- 0.250
70 --- 0.0083--- 210 --- 0.210
80 --- 0.0070--- 177--- 0.177
100 --- 0.0059--- 149--- 0.149
120 --- 0.0049--- 125 --- 0.125
140 --- 0.0041 --- 105 --- 0.105
170 ---0.0035--- 88 --- 0.088
200 --- 0.0029--- 74 --- 0.074
230 --- 0.0024--- 63--- 0.063
270 --- 0.0021--- 53--- 0.053
325 --- 0.0017--- 44--- 0.044
400 --- 0.0015--- 37 --- 0.037
So if i'm readin this right I would git some 200 and 325 mesh silkscreen which would be close to the 45 ad 75 micron bags that THG suggested. Any other suggestions all. Oh Hick posted while I was tryin to insert a table into the thread (that dont work lol), So now I'm thinkin if I get say a 88 micron do I need to use more than 1 size? Is it worth it to make 3 drums say 125, then 74, then 44. Thanks Guys.