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Performax 16/32 adjustment problem?

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Forum topic by Weatherman posted 07-13-2013 07:17 PM 610 views 0 times favorited 9 replies Add to Favorites Watch
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Weatherman

16 posts in 1110 days


07-13-2013 07:17 PM

Topic tags/keywords: drum sander performax 1632 adjustments

Hi guys,

I was in the market for a drum sander a while ago as the small one I built wasn’t able to do the larger pieces I needed. I scored a great craigslist find on an older Performax 16/32 that was sitting in this nice old man’s garage. The only thing it needed was a new conveyor belt.

Anyways, I’ve made all the adjustments and leveled the drum, but I’m running into a minor problem that is driving me crazy. I can run a cutting board through, say a 15×11” board. Using 80 grit with light passes, the sander takes more out of the center of the boards than the ends. It’s not much, about a 1/16”, but to me it’s noticeable. My wife says I’m crazy. I just ran one through to clean it up and at the front and back, both left and right sides are about 1.250”, but in the center of the board, it’s about 1.200. Call me OCD, but I’d like to try to get it closer. I’ve tried angling the wood, as well as adjusting the speed. I’m just not sure what adjustment on the drum to make. Could it be the tension rollers? Has anyone had any problems like this? I looked in the manual but didn’t see anything that related to the center being low, just sniping of the ends.

Thanks!

-- Brian


9 replies so far

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JustJoe

1554 posts in 696 days


#1 posted 07-13-2013 07:22 PM

I have the 16/32 and I don’t see how it could be off in the middle. Was it adapted to hook and loop? If not, then there is nothing on the cylinder that could be bowed. When you take off the sandpaper and put a straight edge to the cylinder is it straight? I just had a roller come loose and fall down last week – each one is held on to a bracket with a screw/spring on each end and it’s a pain to get back on, but if the rollers are out of adjustment that just affects how well the wood rolls under the cylinder.
EDIT: Or do you mean the other middle, as in the front of the board being the first thing to go under the cylinder, and then the low spot in the middle goes under, and then the back part of the board goes under?

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Gary

7259 posts in 2091 days


#2 posted 07-13-2013 07:23 PM

Hey, Brian….does it make any difference where on the conveyer belt you place the wood? Far left or far right?

-- Gary, DeKalb Texas only 4 miles from the mill

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Weatherman

16 posts in 1110 days


#3 posted 07-13-2013 07:32 PM

Joe, I mean what you said in your edit. I’m sorry I wasn’t clear in the description. The drum is flat and true and hasn’t had the hook and loop conversion. The front is the first part of the board that goes through, with the back being the last part of the board going through. The low spot is in the middle.

Gary, I haven’t found any difference. I’ve tried multiple positions and even send the board through diagonally. When it goes through that way, the low spot is in the same place, just diagonally across the board.

-- Brian

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Loren

7576 posts in 2306 days


#4 posted 07-13-2013 07:41 PM

Check the platten for a hump.

-- http://lawoodworking.com

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JustJoe

1554 posts in 696 days


#5 posted 07-13-2013 07:45 PM

Is this new belt like the old one – wide sandpaper glued into a belt – or is it a rubber one. If it’s rubber, is it thick enough to have some give? If so, maybe that’s the problem but I don’t know what adjusting the roller tension would do.

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Howie

2656 posts in 1581 days


#6 posted 07-13-2013 08:01 PM

Just a thought…could it be when you installed the belt you tightened it up enough to cause it to “pucker” slightly in the middle?

-- Life is good.

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Gary

7259 posts in 2091 days


#7 posted 07-13-2013 08:56 PM

Howie, I don’t think that would be it since he get the same results even if he repositions the board. Curious

-- Gary, DeKalb Texas only 4 miles from the mill

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Weatherman

16 posts in 1110 days


#8 posted 07-15-2013 02:18 PM

Thanks for the thoughts guys. I think I’ll just start from the beginning and redo all the adjustments and see what happens.

-- Brian

View Cosmicsniper's profile

Cosmicsniper

2199 posts in 1817 days


#9 posted 07-15-2013 03:41 PM

I’d check the tension rollers, Brian. Whereas I haven’t noticed this happen on my 22/44, I can see how that might happen and you’ve inspired me to test my own in that regard.

-- jay, www.allaboutastro.com

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