Air Die Grinder Tricks

[BirdMan]

I use air die grinders and made an adjustable slowness using a painting regulator w/gauge to vary speed and a valve to use it or not. Leave long lever main line off and open small lever to get slowness, when finished turn it off and open large full pressure valve.

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[maxracesoftware]

I use this for a cheap way to reduce the air speed. I bought 10 the last time I was there. Open link on the below
. https://www.harborfreight.com/air-tools ... 68220.html

Ron,
how well do those regulators work ?
Does the Grinder RPM spike up real hi RPM when you first start the Grinder , or is air pressure controlled instantly ??
Also , as you are Porting , is Grinder RPM and Power steady enough ???
Any "pros and cons" review you have on these regulators ??

[Ron Miller]

I use this for a cheap way to reduce the air speed. I bought 10 the last time I was there. Open link on the below
. https://www.harborfreight.com/air-tools ... 68220.html

Ron,
how well do those regulators work ?
Does the Grinder RPM spike up real hi RPM when you first start the Grinder , or is air pressure controlled instantly ??
Also , as you are Porting , is Grinder RPM and Power steady enough ???
Any "pros and cons" review you have on these regulators ??

I like them for what I do. Its nice to have the air control attached to the grinder. I grind-port heads and do block detailing. Once you find the air speed you like, the cheap regulator pretty much stays put. I have had a few loosen up. And what I mean is the air control dial will move a little and lower the grinder speed. I never had one spike up, its always been down. I start at a low air speed and work my way up when I'm using a 6 to 10" cartridge roll mandrels. So far its been good to me.

[wfolarry]

I have both the small inline & the pressure regulator with gauge. Didn't have much luck with the inline [always backing off] but the regulator is nice. I have it set to the pressure that works best for the tools I use most & the others I can fine tune with the regulator built into the air grinder.

[BOOT]

Since it was also brought up this thread, figured I should post the two spd controller vid here as well https://youtu.be/QsF8s8K916g