Flat Polish Line Machines

[dustinbraudway]

For those of you that run splash machines or flat polish machines, what is the max bar pressure that you go up to? My gages say that you can apply up to 6 bars, but I never go more than 4 because I am worried that too much pressure will cause the motors to wear faster or become damaged.

I naturally run my machine with the proper amount of bar pressure to get the right polish, but was just curious as if you can apply to much pressure or are the machines equiped to actually handle 6 bar?

[Dan R.]

Why would you want/need to run at that high of pressure? We use ours at a little less than 4 bars.

[politefab]

same here if you run it that high you just were out your pads faster

[dustinbraudway]

That's what I figured as well. I was just curious. I start mine at 3.2 bar and slightly increase up from there to a little above 4 in the final. More or less just enough to get that nice polish.

I really don't understand why they have such a high bar pressure on there.


Thanks for the feed back!

[Dan R.]

Probably the same reason that your speedometer goes to 120 mph. It can do it, not sure why or when it is required, but it is nice to have when you do.

Or it could be that to run effieciently the motors need more capacity than they actually use, I honestly do not know.

[Dan Dauchess]

Dan beat me to it....

[dustinbraudway]

So your telling me that you haven't tried to go 120!

[Joe Durfee]

Our Lara runs from 1bar on the lower grits and up to 2.8 on the finer grits. The Lola is about the same.

[Josh]

Our Marmo starts with 2.5 and goes upto 3.5

[william w]

The same as josh on our marmo. we run 5 bars on the first one but it is locked on how high is can go.

[Brian Briggs]

Here is the recommended settings for the FIMAD Wheels on various machines

SUBJECT: FIMAD NITRO POLISHING WHEELS
FLAT EDGE
POSITION GRIT POSITION GRIT POSITION GRIT
1 60 1 60 1 60
2 120 2 120 2 120
3 220 3 220 3 220
4 400 4 400 4 400
5 800 5 800 5 600
6 1800 6 1800 6 800
7 3500 7 1800
8 3500
PRESSURE
COMANDULLI : 2 ¾ BAR
MARMO MECCANICA : 2 ½ BAR
PIRANHA : 50 Psi
BULLNOSE
The grit sequence on bullnose is affected by the grit size of the metal bond wheel.
Following are some example with a traditional metal bond coarse grit.
POSITION GRIT POSITION GRIT POSITION GRIT
1 120 1 120 1 120
2 220 2 220 2 220
3 400 3 400 3 400
4 800 4 600 4 600
5 1800 5 800 5 800
6 3500 6 1800 6 1200
7 3500 7 1800
8 3500
COMANDULLI : 2 ¾ BAR
MARMO MECCANICA : 2 ½ BAR
SPECIAL PARAMETHERS FOR PARK VELOCITY WITH 6” NITRO
Grit 120 36Psi
Grit 220 36Psi Grit 400 36Psi Grit 800 38Psi Grit 1800 40Psi Grit 3500 40Psi Speed Control: 18% Speed: 9.8"/min Miter Speed: 98 Degrees/sec Speed Control: 70% Active Size 1.625" Hold Down Pressure 55Psi

[scott@stone age]

Geeze!! what a walking book of knowledge that Brian is!!!

[Dan R.]

[Antonio Almonte]

Thhat smiley has a strong resemblance to someone I know. Hmmmmmm.

[Tom Shannon]

It's the little things that make me laugh. Thanks Antonio

[B.Baltzegar]

What pressure are most using on the chamfer head?
Since only one grit is touching the stone on the chamfer, what grit produces the best results?

[dustinbraudway]

Brian,

I am running bricks for the chamfer (Salem Stone) 400 grit for the front and 220 for the back. Pressure is around 3 -3.5 bar at most.

[Dan R.]

We use 400 stones front and back on our Flying Flat about 3 + bars of pressure.

[jbergman]

3.0 to 3.5 bar using bricks on Montresor machines, drop to 2.5 using resinoid diamond wheels. This is true also for ES. It will vary some with different materials, but these are good starting points. I always urge that a book be kept listing feed rates and pressures for whatever material is being run.

John Bergman
Bergman-Blair / Salem Stone
Centerport, NY
631-912-0001