Recommend a Good Pneumatic Buffer? - PeachParts Mercedes-Benz Forum

EricSilver · #1 03-26-2008, 01:13 AM

Does anyone recommend a good pneumatic buffer?

BoomInTheTrunk · #2 03-31-2008, 06:39 PM

are you looking for a random orbital or just like a polisher. If you are a novice than a random orbital is your best bet. If you are going to go for that then get an electric they are cheaper.

EricSilver · #3 03-31-2008, 11:00 PM

Quote:

Originally Posted by BoomInTheTrunk

are you looking for a random orbital or just like a polisher. If you are a novice than a random orbital is your best bet. If you are going to go for that then get an electric they are cheaper.

Looking for a random orbital.

I prefer pneumatic after seeing Kobalt's portable CO2 system (which uses paintball CO2 clinders). I use compressed CO2 for my aquarium, and it would be simple to adapt my CO2 tank for the same purpose, though it would be less portable.

BoomInTheTrunk · #4 03-31-2008, 11:06 PM

well pneumatic wont be very good if you are going to use that. Pneumatic buffers use alot of air. most say to have atleast a 60 gallon compressor because you will constantly be waiting air pressure. that kobalt tank isn't going to cut it. order an electric from these guys, get a package.

http://www.properautocare.com/porcabpolac.html

EricSilver · #5 03-31-2008, 11:15 PM

Quote:

Originally Posted by BoomInTheTrunk

well pneumatic wont be very good if you are going to use that. Pneumatic buffers use alot of air. most say to have atleast a 60 gallon compressor because you will constantly be waiting air pressure. that kobalt tank isn't going to cut it. order an electric from these guys, get a package.

http://www.properautocare.com/porcabpolac.html

Pressurized CO2 provides as high, or higher pressure than an air compressor. What are an orbital's requirments -- pressure and flow rate?

BoomInTheTrunk · #6 03-31-2008, 11:29 PM

they can range from 15 to 30 cfm at 90 psi. one little container isn't going to last long enough to get much done.

EricSilver · #7 04-01-2008, 12:00 AM

Quote:

Originally Posted by BoomInTheTrunk

they can range from 15 to 30 cfm at 90 psi. one little container isn't going to last long enough to get much done.

I have a 5lb co2 tank. The regulator goes up to about 160 psi, and 5lbs should be able to last a while, shouldn't it?

BoomInTheTrunk · #8 04-01-2008, 12:41 AM

not to sound rude, but why is it that you would like a pneumatic over electric?

EricSilver · #9 04-01-2008, 01:23 AM

Quote:

Originally Posted by BoomInTheTrunk

not to sound rude, but why is it that you would like a pneumatic over electric?

Because I have the available compressed gas. Like I said earlier, I saw the Kobalt portable CO2 system that uses a 20oz CO2 cylinder. It would be easy to adapt a larger cylinder as well.

Mike D · #10 04-01-2008, 10:31 AM

The problem with using the CO2 system is the buffer uses FLOW (volume) versus PRESSURE.

If the buffer keeps a compressor running with a 60 gallon tank how long do you think a 20 gallon CO2 tank is going to last?

Do the math. 13.5 CFM comes out to about a 2.5' X 2.5' X 2.5' cube EVERY minute at 90 psi!

Increasing the pressure to 160 wont do much because any gain you get in compacting the air/gas is lost when the pressure drops below the 90 psi requirement.

EricSilver · #11 04-01-2008, 11:22 AM

Quote:

Originally Posted by Mike D

... how long do you think a 20 gallon CO2 tank is going to last?

3.5 minutes.

Since 1 gallon of liquid CO2 = 74 cu ft of gas, and a 5lb tank holds only about 62% of that capacity (46 cu ft).

Therefore, I'll confine its uses to pneumatic nailing/stapling, and painting.