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Nuematic Sanders
Last Post 19 Nov 2008 09:28 PM by clearchoice. 17 Replies.
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clearchoice
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16 Nov 2008 11:32 PM  

We are currently using Porter Cable 6" orbital sanders to sand everything (decks, edges, cove, sinks, etc.). We seem to go through these sanders and the sanding pads like hotcakes. Burning the sanders out beyond repair and wearing the sanding pad hook and loop down. Does this happen to alot of you fabricators out there or are my employees not blowing the tool out as often as they should be. I was considering converting over to air. I have in some cases 5 guys sanding at the same time. Question to Everyone......What do you use in your shop and how do feel it is better then the other?

Chino
Andy
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16 Nov 2008 11:38 PM  
We use pneumatic sanders for edges, sinks and coves.  Everything else gets an electric sander of some sort.  We like the GEM and the Surecare but especially the FESTOOL.

Air sanders last a real long time, but you have to have a pretty large compressor to run them efficiently.
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Mike Gladstone
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17 Nov 2008 08:09 PM  

Clearchoice,

Same as Andy. We have a 10hp Kaiser compressor on a closed loop system that has never been drawn down with 5 guys sanding steadly. We,ve got some DA sanders that are 7 years old and going strong. We switched over to PSA pads because the hook & loop didn't last.
Mike G
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18 Nov 2008 06:55 AM  

Clearchoice,

I prefer air sanders, just get the biggest compressor you can plus one size! Also, as Mike mentioned, you must do a closed loop air line. That way it can backfeed to any drop leg. And never use a coupling in the sysytem, always put in a "TEE" with a drop and valve. That way if you ever want to add a drop, it is already there and there is no down time.

Mike,

When using PSA pads, remember to clean the pads often. Those gumballs of glue can sometimes give spikes on the finish and create swirl marks.

Bill
Bill W. bwolle@msn.com
Mike Gladstone
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18 Nov 2008 08:40 AM  

Bill,

I get enough spikes with the power company hereGood advice on clean pads. Just upgrade to a 30hp compressor and the new machine should be here 15 DecChristmas comes early.
Mike G
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Andy
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18 Nov 2008 10:33 AM  
Bill,

What is a closed loop air line?

PSA sanders are great, but seem to waste more sandpaper than the hook and loop.
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18 Nov 2008 11:01 AM  

Andy,

A closed loop airline connects back to itself as a "loop" around the shop. That way there are no dead ends. Any drops can be fed air from both ends and this helps eliminate low pressure and CFM areas if multiple machines are working in a small area or close together.

I prefer hook & loop. I was just responding to Mike using PSA.
Bill W. bwolle@msn.com
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18 Nov 2008 11:02 AM  

Mike,

30 hp! WOW!

What's the cfm at 120 psi?
Bill W. bwolle@msn.com
Tom M
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18 Nov 2008 12:39 PM  
Another advantage of a closed loop is it makes for a better piggy back connection with a second compressor.
"Our doubts are traitors and make us lose the good we oft might win, by fearing to attempt." - Shakespeare
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18 Nov 2008 04:03 PM  

cfm is 122 at 125 psi. But even more impressive is the sound level is 68db.
Mike G
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19 Nov 2008 08:34 AM  
Oh wow. I don't know what I would do with it as I have no shop or how I would pay for it as I have no job, but I WANT ONE!
Bill W. bwolle@msn.com
clearchoice
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19 Nov 2008 05:32 PM  
Ok here is the deal. A year ago I upgraded my cheap Home Depot compressor to a Quincy 5HP/80 Gallon 3 Phase Compressor with a auto drain and a Zek's Refrigerated Air Dryer. The reason for this upgrade (besides the obvious) was to run my new CNC. Now (as I mentioned) I am looking at converting from electric sanding to air. I found a used Quincy 10HP/120 Gallon Compressor and was considering purchasing it. Should I leave my current 5HP in place and add the 10HP or should I just replace the 5 with the 10HP or will the 10HP not be enough for what I am trying to accomplish. As mentioned I will need to run the CNC and have at least 5 sanders going at the same time. Appreciate all the feedback.
Chino
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19 Nov 2008 06:11 PM  

Is it a rotary screw compressor?
Mike G
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Andy
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19 Nov 2008 06:11 PM  
Thanks for the info Bill.  Mine is not a closed loop and it works like crap.  maybe I need to do some upgrading.
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19 Nov 2008 06:13 PM  

Andy,

Put the closed loop in you will not regret it.
Mike G
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Tom M
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19 Nov 2008 06:20 PM  
Clearchoice,
In a closed loop system, keep the 5 HP in the line, but set the start up pressure at a lower clip. It will then be a nice kicker on demand. It won't get worked as hard either.
"Our doubts are traitors and make us lose the good we oft might win, by fearing to attempt." - Shakespeare
Tom M
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19 Nov 2008 06:22 PM  
You might want to reverse that order if you are not going to do a lot of same-time sanding with the tools, but prolly the ten as a lead off makes sense.
"Our doubts are traitors and make us lose the good we oft might win, by fearing to attempt." - Shakespeare
clearchoice
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19 Nov 2008 09:28 PM  
Mike,

Its not a rotary screw compressor.
Chino
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