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Old farm style white grindwheels

On these old style stones what was the recommended SFM? Thanks, CP
7 comments posted 9yrs
posted by email
7 comments posted 9yrs posted by email

3 Pumps - 1 Tank

I've got three small CNC mills I use primarily for high speed (24K RPM) milling of aluminum. I use flood coolant with d...
0 comments posted 9yrs
posted by none
0 comments posted 9yrs posted by none

tig welder

tig high freq Does anyone here know what the frequency & initial voltage is of the "high freq ac" used in TIG welders?...
0 comments posted 9yrs
posted by ht
0 comments posted 9yrs posted by ht

factional HP gast vane pump

My new-old stock gast rotart vane pump just died. I though it broke a shear pin as only the motor was still spinning. I...
13 comments posted 9yrs
posted by presence
13 comments posted 9yrs posted by presence

Fun with scrap ( diamond coated stainless disks )

At the scrap yard they had a tri-wall container with a bunch of stainless s teel disks. 4.25 inches in diameter and 5 m...
8 comments posted 9yrs
posted by dcaster
8 comments posted 9yrs posted by dcaster

Lead Burning plates inside old lead acid cells

I have read quite a bit about lead burning, but it does not seem appropriat e for my requirement. From a previous life...
33 comments posted 9yrs
posted by georgewbell
33 comments posted 9yrs posted by georgewbell

Forming tap

I was rummaging through my tap collection and came across a couple of forming taps. I have no idea how they got there,...
16 comments posted 9yrs
posted by BobEngelhardt
16 comments posted 9yrs posted by BobEngelhardt

OT My third electric bike

Took so long to make. This might be the easiest to build electric bike there is, versus power and reliability. https://...
4 comments posted 9yrs
posted by always.look
4 comments posted 9yrs posted by always.look

Bridgeport Mill Making Knocking Or Clicking Noise

A friend of mine has a Bridgeport knee mill making a loud clicking or knock ing sound in the head. I could not find any...
14 comments posted 9yrs
posted by kujans0
14 comments posted 9yrs posted by kujans0

arrgh - forte agent issue

Greetings and salutations A heads up. There is a "Y2K" problem for agent users. Seems that Forte hard coded after the e...
0 comments posted 9yrs
posted by phamp
0 comments posted 9yrs posted by phamp

Microwave Outrage

I am pissed. Kellyanne Conway has just revealed the existance of Obammys shadow government secret microwave camera spyi...
23 comments posted 9yrs
posted by GummerAsch
23 comments posted 9yrs posted by GummerAsch

Off topic but of interest on rcm

I'll bet practically everybody who posts on rcm has an inkjet printer. I have refilled cartridges in the past with vari...
1 comments posted 9yrs
posted by etpm
1 comments posted 9yrs posted by etpm

External ballistics

Yes, I know this isn't strictly metalworking, but there are plenty of gun people here. A howitzer fires, with elevation...
15 comments posted 9yrs
posted by daveb
15 comments posted 9yrs posted by daveb