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Jet Drum Sander 16-32

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Forum topic by Jgoldy posted 10-01-2020 01:52 PM 275 views 0 times favorited 7 replies Add to Favorites Watch
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Jgoldy

1 post in 25 days


10-01-2020 01:52 PM

I Have been sanding 15 inch boards with my jet drum sander. It keeps making a ridge about 3-4 inches in on the leading edge. The ridge runs the length of the board and is about 1/32 of an inch lower. Any ideas?


7 replies so far

View Peteybadboy's profile

Peteybadboy

2330 posts in 2833 days


#1 posted 10-01-2020 01:55 PM

That does not happen with mine. I usually get planner snipe from the planer but remove that with the Jet 16-32.

Perhaps you are making to heavy a pass?

-- Petey

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splintergroup

4051 posts in 2105 days


#2 posted 10-01-2020 02:25 PM

Does the ridge run perpendicular to the drum or parallel to it (like planar snipe)?

Perp is probably from the points where the paper is inserted into the drum at the ends, this always sticks up a tad higher unless you put a good crease at the bends or it gets used a few times.

Parallel is most likely from the outfield roller being too tensioned (or the wood has a slight warp). It’s a tricky adjustment and can make a big difference in preventing snipe, I keep my outfield roller almost loose but keep the board pressed flat against the table while entering/exiting the drum.

View 4wood's profile

4wood

60 posts in 837 days


#3 posted 10-01-2020 02:47 PM

I also have a Jet 16-32. I am not understanding exactly what your problem is. Did you mistype the word lower. To me a ridge is a high spot. I know it makes sense to you. I have tried to explain problems to other people, that are very clear to me, but the other person just doesn’t understand. Can you send a photo (or a drawing) possibly highlighting the ridge or areas with chalk or a pencil. Click on img above the area where your are typing to send a photo. Also how long are the boards? Is this drum sander new to you? Here are several things that I would check or do.

Is the sandpaper on you drum clean.
Is there and dust accumulated between the sandpaper and the drum.
Is the tension clamp keeping you paper tight.
Is there a bow in your board.
If you have an infeed table check it to make sure it is not creating the problem. It may be set too high. I don’t use an infeed table on mine because I sand a lot of long boards and if one has a bow there is a problem.
As mentioned above take light passes. I consider a 1/8 turn or less of the adjuster a light pass.
Draw white chalk lines across your board before sanding and you will see exactly where the sander is sanding.
Change your sandpaper.
What grit are you using?

Keep sending more information and someone here, will have the answer.

View Robert's profile

Robert

4051 posts in 2364 days


#4 posted 10-01-2020 04:34 PM

Check the alignment. I have a Supermax which has a control lever for eliminating the ridge on wider boards.

Check your manual you machine may have such a feature.

-- Everything is a prototype thats why its one of a kind!!

View pottz's profile

pottz

11711 posts in 1867 days


#5 posted 10-01-2020 11:12 PM



I also have a Jet 16-32. I am not understanding exactly what your problem is. Did you mistype the word lower. To me a ridge is a high spot. I know it makes sense to you. I have tried to explain problems to other people, that are very clear to me, but the other person just doesn t understand. Can you send a photo (or a drawing) possibly highlighting the ridge or areas with chalk or a pencil. Click on img above the area where your are typing to send a photo. Also how long are the boards? Is this drum sander new to you? Here are several things that I would check or do.

Is the sandpaper on you drum clean.
Is there and dust accumulated between the sandpaper and the drum.
Is the tension clamp keeping you paper tight.
Is there a bow in your board.
If you have an infeed table check it to make sure it is not creating the problem. It may be set too high. I don t use an infeed table on mine because I sand a lot of long boards and if one has a bow there is a problem.
As mentioned above take light passes. I consider a 1/8 turn or less of the adjuster a light pass.
Draw white chalk lines across your board before sanding and you will see exactly where the sander is sanding.
Change your sandpaper.
What grit are you using?

Keep sending more information and someone here, will have the answer.

- 4wood


+1 ive got the same one also,never had that issue.

-- working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.

View becikeja's profile

becikeja

1133 posts in 3696 days


#6 posted 10-02-2020 10:42 AM

Check the sand paper. Had a similar experience when I sanded some cutting boards. Had a little too much glue squeeze out and did not scrape it away. Decided just to let the drum sander take care of it. A little of the glue melted into the sandpaper. Created a tiny dent just like you are describing. Changed the paper and everything was fine. It was hard to find on the paper.

-- Don't outsmart your common sense

View TechTeacher04's profile

TechTeacher04

456 posts in 2415 days


#7 posted 10-02-2020 11:18 AM

Sounds like the sanding belt has slid over and is removing more material where the sandpaper is double thickness. I have had this happen a few times on the motor side of the drum. Loosen the wrap, realign it and retention it.

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