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#41
05-04-2010, 08:30 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: plastic thickness - mil/ mm/ gauge

Quote:
 Originally Posted by Unregistered how to convert 24 mm to gauge
25.4 mm would be 100,000 gauge so
24 x 100000/25.4 = 94488 gauge
#42
05-05-2010, 06:04 PM
 coolnice Junior Member Join Date: Apr 2010 Posts: 3 Rep Power: 0
Re: plastic thickness - mil/ mm/ gauge

Is 20 gauge the same as 20 mil? Someone said they are the same, but I was sure mil was thicker than gauge. Any ideas?
#43
05-06-2010, 02:17 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: plastic thickness - mil/ mm/ gauge

Quote:
 Originally Posted by coolnice Is 20 gauge the same as 20 mil? Someone said they are the same, but I was sure mil was thicker than gauge. Any ideas?
1 mil seems to be 100 gauge, but, really, there is no formal definition. Anyone can make up a different definition of gauge. Just ask for real thickness
#44
05-06-2010, 11:19 AM
 Unregistered Guest Posts: n/a
Re: plastic thickness - mil/ mm/ gauge

In terms of PVC, the specs on a Sea-Doo inflatable toy tell me it's made of 30 gauge PVC, while the specs on a PVC pond liner at Home Depot describe it as 20 mil. Both seem very close in thickness. Applying that 100:1 ratio would make the 20 mil pond liner 2000 gauge. Doesn't seem right....

Dave
#45
05-15-2010, 06:27 PM
 Unregistered Guest Posts: n/a
Re: plastic thickness - mil/ mm/ gauge

unc.edu/~rowlett/units/scales/wiregauge.html

This is a conversion chart. Copy/paste the link.
#46
05-16-2010, 01:56 AM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: plastic thickness - mil/ mm/ gauge

Quote:
 Originally Posted by Unregistered unc.edu/~rowlett/units/scales/wiregauge.html This is a conversion chart. Copy/paste the link.
Please note that is only for wire. "Gauge" has numerous definitions applying to different situations and materials. From the "gauge" article at the same site:
Quote:
#47
05-24-2010, 11:39 AM
 Unregistered Guest Posts: n/a
Re: plastic thickness - mil/ mm/ gauge

What a great example of the confusion of converting metric to english!
#48
05-24-2010, 12:45 PM
 JohnS Moderator Join Date: Dec 2007 Location: SE Michigan, USA Posts: 9,536 Rep Power: 19
Re: plastic thickness - mil/ mm/ gauge

Quote:
 Originally Posted by Unregistered What a great example of the confusion of converting metric to english!
I would say the real problem is what is "gauge" and how do you convert it to any "real" unit.
*Millimeters are millimeters, simple and straightforward, worldwide
*Inches are 25.4 mm (that's their legal definition in the US)
*"Gauge" is poorly defined. Since it means many things to many people, it doesn't mean anything (consistent).
#49
05-27-2010, 10:14 PM
 PEGlala Guest Posts: n/a
Plastic Thickness Conversion Chart!! (attempt)

Okay, i myself have gone mad over this whole conversion issue and can't find a chart anywhere! therefore i've decided to read this entire posting thread & piece together some knowledge & came up w/ the below table. can some pro or experts out there verify it??

.................................................. TO THIS (do the actions below)
TO CONVERT FROM below|....Gauge....|....... mil......|....Inch......|.....mm.......|...microns
...Gauge.......................|........-.......|....../100.....|../100000...|..*0.00025...|..*0.245
...Mil............................|.....*100.....| ......-.........|.../1000.....|./39.370079..|..*24.5
...Inch..........................|..*100000...|... ..*1000....|.......-.......|.....*25.4.....|..*24500
...mm...........................|../0.00025...|.*39.370079.|..../25.4....|........-........|..*1000
...microns (um or mym)....|..../0.245....|....../24.5....|.../24500...|...../1000.....|......-

For example:
what is 30 gauge in mm? do this: 30 gauge*0.00025 = 0.0075mm
what is .35 mil in inches? do this: 35 mil/1000 = 0.035 inch
what is 2.0 mm in gauge? do this: 2 mm*100 = 200 gauge

can someone test it out & let me know what you think?
#50
05-27-2010, 10:48 PM
 PEGlala Junior Member Join Date: May 2010 Posts: 2 Rep Power: 0
Plastic Thickness Conversion Chart!! (attempt)

I posted the same content earlier but didn't create a user ID so that i can track your replies. in an attempt to sort this whole conversion effort our, can someone let me know if the conversion table i created is accurate? thanks!

........................................To This (do the below).................................
From This (below).......|Gauge....|mil............|Inch..... |mm..........|microns
....Gauge...................|............|/100.........|/100000|*0.00025...|*0.245
....mil .......................|*100......|............... |/1000...|/39.370079|*24.5
....Inch.....................|*100000.|*1000...... ..|..........|*25.4........|*24500
....mm.......................|/0.00025.|*39.370079|/25.4...|...............|*1000
....microns (um or mym)|/0.245....|/24.5........|/24500.|/1000........|........

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