smidsy 14th March 2007, 10:57 PM Hei Guys,
I've heard mention of something called a "ruger" gauge which is apparently a plate with different lathe & mill finishes - you can compare your work to the ruger gauge (essentially a sample plate) to determine what quality your work is.
I've tried google in as many variations of spelling I can think of but found nothing, can anyone give me more info.
Cheers
Paul
simso 14th March 2007, 11:50 PM Nah not ruger, your talking about roughness charts and plates. Ruger may be a brand name but Ive never heard of it. Basically its a plate with a specific roughness. You can get them in all stages of finish as a comparitor unit. Example you can purchase a plate with an n5 surface finish which means it has an average roughness of centreline through the peaks and crevices of 0.40um,
example a file can give a surface finish of between an n5 and n11
lapping something in with fine honing paste gives an n2 to n4 finish
a sand casted item is usually an n11 finish
Schtoo 15th March 2007, 02:40 AM a sand casted item is usually an n11 finish
You obviously have not seen my sand casting... :roll:
Ruger it is not, rugged is prolly the right word. :D
Woodlee 21st March 2007, 08:51 PM Nah not ruger, your talking about roughness charts and plates. Ruger may be a brand name but Ive never heard of it. Basically its a plate with a specific roughness. You can get them in all stages of finish as a comparitor unit. Example you can purchase a plate with an n5 surface finish which means it has an average roughness of centreline through the peaks and crevices of 0.40um,
example a file can give a surface finish of between an n5 and n11
lapping something in with fine honing paste gives an n2 to n4 finish
a sand casted item is usually an n11 finish
They were known as Ruger gauges at the technical college where I did my traininng 32 years ago.
The only place I've ever seen them though.
I'd forgotten they existed until this post.
marker 21st March 2007, 09:15 PM It not Rubert gauge is it ?
Mark
simso 21st March 2007, 09:52 PM Actually Im glad someone mentioned that, probably talking about rugotest gauges, which are roughness plates of variuos sizes used as a comparitor, havent heard of that name for a long time. Elcometer are the industry standard for these and have superseeded most of the older style units with there new fan dangled ones. I have some elcometer units here at home but none of them say anything on the plates anymore. There just engraved with a roughness number n1-n11
Steve
scooter 22nd March 2007, 05:44 PM Ruger are a gun manufacturer.
Stringy 23rd March 2007, 04:09 PM 42509
42510
a picture tells a thousand words!
Dunno where you would buy one though!
Andy Mac 23rd March 2007, 04:28 PM I didn't know such things existed, but made one up myself recently as a sample thing to show clients!:rolleyes:
I just punched Rugotest into Google and got the following link, looks like they can be bought:
http://www.elcometer.com/international%20index%20pages/international/product%20pages%20-%20English/product%20pages/main%20pages/129.htm
Cheers
Woodlee 26th March 2007, 12:09 AM Actually Im glad someone mentioned that, probably talking about rugotest gauges, which are roughness plates of variuos sizes used as a comparitor, havent heard of that name for a long time. Elcometer are the industry standard for these and have superseeded most of the older style units with there new fan dangled ones. I have some elcometer units here at home but none of them say anything on the plates anymore. There just engraved with a roughness number n1-n11
Steve
Yeah Rugotest ,thats the one.
Ruger is a gun manufacturer ,have a couple of their pieces.
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