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Grizzly 24" Drum Sander Issues

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Forum topic by LaneLaser posted 01-26-2017 05:09 PM 815 views 0 times favorited 10 replies Add to Favorites Watch
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LaneLaser

7 posts in 1208 days


01-26-2017 05:09 PM

Topic tags/keywords: sander finishing sanding question trick tip

Maybe someone can shed some light into my issues with my drum sander. I have a very old 5HP G1066 24” Dual Drum Sander from Grizzly. I was very excited to pick this thing up used for $450. I immediately put new H&L sand paper on it and ran some stock through with great results. Now… I have tried to run some End-Grain cutting boards through it and they shot out the back like a cannon! Literally my wife came out into the garage because she was worried something happened to me. Luckily I was not on that side of the machine. I can say that I have a pretty worn out conveyor belt and that may be the issue. I have tried putting double sided sticky tape on the bottom of the board and all I get is a rocket out the back and now I have a sticky mess on the bottom side of my board. Sounds funny but not when I spent all that time getting the board together only for it to blow apart against the wall. I’m about to sell this machine to someone who wants to spend the money to fix this thing. Unless someone on here might be able to shed some light on the situation.

My real questions are
Do I need a new conveyor belt? or
Do I need to adjust the drums or the rollers? or
Do I need to make sure it’s not taking too much material off? Or
Am I taking too big of a bite?

Any Help would be greatly appreciated.
I’ve included a pic of my machine, it’s a little hard to see but it’s on the right side.


10 replies so far

View ClammyBallz's profile

ClammyBallz

424 posts in 975 days


#1 posted 01-26-2017 07:03 PM

I’ve never had a board shoot out on my drum sander, that’s some scary stuff. If the conveyor belt is worn, I’d start with a new one. I know Industrial Abrasive can custom make on for you. After you get a new belt on there, I’d run two 1” strips of wood through the sander, one on the left, one on the right, and measure the thickness of each. If they don’t match up, align the drums.

It’s possible you were taking too much off at one time in conjunction with a worn belt. I like to feed the piece through on the conveyor while the drum is off, then lower the drum until it just about touches the surface. Each pass I lower it .005”. This varies based on grit, wood type and board width, but it’s a good starting point.

View dbray45's profile

dbray45

3295 posts in 2615 days


#2 posted 01-26-2017 08:05 PM

Are the drum and belt going in the correct directions. If the belt and drum are both going in the same direction, it could easily come out like a rocket. If the belt is loose or the the drive belt for the belt is loose, same thing.

Taking too deep of a cut or not deep enough can have to same effect.

May want to give Grizzly a call and see if you can get the owner’s manual. I would start there.

-- David in Damascus, MD

View AZWoody's profile

AZWoody

1138 posts in 1063 days


#3 posted 01-26-2017 08:37 PM

I have an General which is effectively the same sander. After putting the hook and loop kit on, you’re effectively making the drum wider. Mine was originally designed to use standard sandpaper rolls so I needed to adjust the pressure rollers farther down to press the material down to the feed belt a little more.

As for the feed belt, even with the rollers being adjusted right, you still might have a bad belt but as long as the rubber feels “rubbery” and not hard and cracked I would think you’re still fine.

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AZWoody

1138 posts in 1063 days


#4 posted 01-26-2017 08:39 PM

double post

View Bill White's profile

Bill White

4807 posts in 3799 days


#5 posted 01-26-2017 08:41 PM

I guess that you have not contacted Grizz tech services…..........................
Bill

-- bill@magraphics.us

View LaneLaser's profile

LaneLaser

7 posts in 1208 days


#6 posted 01-26-2017 09:30 PM



I guess that you have not contacted Grizz tech services…..........................
Bill

- Bill White

I have not contacted Grizzly yet. I will definitely do that next.


I ve never had a board shoot out on my drum sander, that s some scary stuff. If the conveyor belt is worn, I d start with a new one. I know Industrial Abrasive can custom make on for you. After you get a new belt on there, I d run two 1” strips of wood through the sander, one on the left, one on the right, and measure the thickness of each. If they don t match up, align the drums.

It s possible you were taking too much off at one time in conjunction with a worn belt. I like to feed the piece through on the conveyor while the drum is off, then lower the drum until it just about touches the surface. Each pass I lower it .005”. This varies based on grit, wood type and board width, but it s a good starting point.

- ClammyBallz

I did look into belts at Grizzly and they are like $375 which is almost as much as I paid for the machine so I was thinking that wasn’t going to happen. I will contact Industrial abrasives and see what they would charge.


I have an General which is effectively the same sander. After putting the hook and loop kit on, you re effectively making the drum wider. Mine was originally designed to use standard sandpaper rolls so I needed to adjust the pressure rollers farther down to press the material down to the feed belt a little more.

As for the feed belt, even with the rollers being adjusted right, you still might have a bad belt but as long as the rubber feels “rubbery” and not hard and cracked I would think you re still fine.

- AZWoody

Ok I never really thought that would make enough difference but you may be right. I will adjust the rollers. As for the conveyor belt it’s sorta rubbery but has some tears and it’s pretty slick, not really rubbery anymore. I venture to say this machine is about 20 years old.


Are the drum and belt going in the correct directions. If the belt and drum are both going in the same direction, it could easily come out like a rocket. If the belt is loose or the the drive belt for the belt is loose, same thing.

Taking too deep of a cut or not deep enough can have to same effect.

May want to give Grizzly a call and see if you can get the owner s manual. I would start there.

- dbray45

The belt and the drum are going in the same direction however I don’t believe there’s a way to reverse the direction of the drum… maybe when I call Grizzly they can tell me that as well.

Thanks everyone for the responses so far.

View LaneLaser's profile

LaneLaser

7 posts in 1208 days


#7 posted 01-27-2017 04:10 PM

Update:
I called Grizzly and after several times calling (their phone system is wacked) they were sorta helpful. Bob from Tech support didn’t seem to know much about the machine he was referring only to the manual. But, he did suggest that I raise the drums or lower the feed rollers first. Too much drum and not enough feed roller can cause a pitching machine effect… He also said that I should replace at some point the conveyor but more than likely it’s the feed rollers not being below the drum enough. Thank you everyone for your responses and suggestions. I love this site and everyone’s willingness to help out fellow woodworkers.

View dbray45's profile

dbray45

3295 posts in 2615 days


#8 posted 01-27-2017 06:54 PM

I didn’t know it had feed rollers – that makes sense

-- David in Damascus, MD

View runswithscissors's profile

runswithscissors

2565 posts in 1864 days


#9 posted 01-28-2017 04:41 AM

Shouldn’t the drum and feed belt be going in opposite directions?

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View LaneLaser's profile

LaneLaser

7 posts in 1208 days


#10 posted 01-30-2017 04:29 PM

runwithscissors there are rollers to hold the material down and that’s why they are ok to go in the same direction.

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