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screen printing => Screen Making => Topic started by: cbjamel on June 30, 2015, 11:14:28 PM

Title: Just got Dt-156 EOM gauge
Post by: cbjamel on June 30, 2015, 11:14:28 PM

Just got Dt-156 EOM gauge now what do I do. No emulsion screen,get number then each side or ?? How do I get eom of say 20 percent or mils which ever.

Thanks,
Shane

Title: Re: Just got Dt-156 EOM gauge
Post by: Underbase37 on July 01, 2015, 02:46:23 AM

#2

http://www.kiwo.com/s/Understanding-Mesh-Geometry.pdf

Murphy37

Title: Re: Just got Dt-156 EOM gauge
Post by: jvanick on July 01, 2015, 08:04:53 AM

measure your mesh in an open area (or around the edges).. ie: 60 microns
now measure your mesh with emulsion on it, I like to do a few measurements to make sure that I'm consistent across the board... get your number (ie 75 microns)

divide 75 by 60 == 1.25   -> your EOM is 1.25

-or-

subtract emulsion+mesh thickness from mesh thickness then divide by the mesh thickness

(75-60)/60 = 0.25

both examples show that the EOM is 25%

if you really want to get geeky about it and track everything, you can download a copy of my emulsion tracking spreadsheet:

https://docs.google.com/spreadsheets/d/1bsqE6POiBiCCztbQZlCZIOG_TlYNbZRtJ6_x7aTcShI/edit?usp=sharing (https://docs.google.com/spreadsheets/d/1bsqE6POiBiCCztbQZlCZIOG_TlYNbZRtJ6_x7aTcShI/edit?usp=sharing)

keep track of your exposure time, thicknesses, eom, stouffer strip results, coating technique, and even get target exposure times based on the stouffer strip results.

Title: Re: Just got Dt-156 EOM gauge
Post by: cbjamel on July 01, 2015, 10:20:06 AM

Thanks that all helped.
Shane