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Forum topic by Karda posted 03-08-2018 04:26 AM 505 views 0 times favorited 14 replies Add to Favorites Watch
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Karda

1235 posts in 674 days


03-08-2018 04:26 AM

Hi, I went to put paper on my orbital sander, but when I cut the sheet and clamped the paper in to the sander the paper kinked and tore even before I started sanding, what am i doing wrong, is there a special paper thats not to expensive thanks


14 replies so far

View caboxmaker's profile

caboxmaker

281 posts in 508 days


#1 posted 03-08-2018 04:35 AM

Sandpaper kinked? Was it in the sander tight and flat? What grit?

View Karda's profile

Karda

1235 posts in 674 days


#2 posted 03-08-2018 04:45 AM

the clamps on the end are very hard to work and don,t open very far and it is hard to get the paper in at all. but to do so requires a sharp bend. This time i was using 60 grit

View caboxmaker's profile

caboxmaker

281 posts in 508 days


#3 posted 03-08-2018 04:47 AM

60 grit is tough stuff. Are you sanding over something sharp?

View Rich's profile

Rich

3548 posts in 710 days


#4 posted 03-08-2018 05:22 AM

I don’t know which sander you’re using, but they vary greatly when it comes to ease of use. In the 1/4 sheet group the Porter Cable 330 is notoriously difficult to put paper in. The jaws don’t open very much and the unit is awkward to hold and you need to use the tool that comes with it because the side levers are worthless. Also, the pad is pretty thick, so the paper doesn’t go very far in. The Makita 4556 is a little better, but still kind of a pain. The nicest one is the DeWalt. They took the old Bosch design where the front clasp holds the paper, and the rear one is designed to tighten it as you close it. The dust collection on it actually works too. Great sander.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

View Karda's profile

Karda

1235 posts in 674 days


#5 posted 03-08-2018 06:04 AM

has nothing to do with sanding the paper tore where I bent it to put it into the holding clamps before I started sanding

View jimintx's profile

jimintx

824 posts in 1705 days


#6 posted 03-10-2018 02:35 PM

I think you just have to get the first edge in so it is straight and aligned with the pad when you fold it over and across the pad. Get that settled before working on the other side.
~ Then use fingers from one hand to hold the paper straight while you force the first 1/4” or so of the opposite edge under the clamp that you have opened with your other hand. THIS is the critical, usually awkward step for me.
~ Once it is in there just a little bit, you can hold it from the outside with a finger or two, and open the clamp to allow you to push more of the sheet’s edge in further and straighten it out as needed.

Rich has pointed out that some of these qtr sheet sanders are easier to use than others:
My really old Makita BO4510 is now almost never uses because it is so difficult and tedious to load paper.
I have a medium-old DW411 that is nice to load.
And a fairly new Milwaukee 6033-21 that is also a very nice unit to load and use.

(Now that I have written this, I think I will put that old Makita in the next garage sale!)

-- Jim, Houston, TX

View dhazelton's profile

dhazelton

2789 posts in 2417 days


#7 posted 03-10-2018 03:03 PM

The coarser the grit the easier for the paper to crack as opposed to flex. I’d check to see if you can get an adhesive type paper for your sanding pad.

View johnstoneb's profile

johnstoneb

3001 posts in 2293 days


#8 posted 03-10-2018 03:07 PM

60 grit is almost impossible to bend that sharply with out it cracking. What are you trying to do that you need 60 grit?

-- Bruce, Boise, ID

View John Smith's profile

John Smith

1312 posts in 283 days


#9 posted 03-10-2018 04:00 PM

try switching gears on the sanders:

I reserve the 1/4 sheet palm sander for 100 grit or higher.
if 80 grit and lower is needed, I use the 5” round Random Orbital with the
velcro pad. that ends the hassle of loading problems of thicker paper on the palm sander.
IMHO – the 1/4 sheet palm sanders are for finish work – not rough-hogging it.

.

-- some people are like a Slinky - - - pretty much good for nothing. But still make you smile when you push them down a flight of stairs.

View Karda's profile

Karda

1235 posts in 674 days


#10 posted 03-10-2018 04:29 PM

I think a new sander is in order, one side of the clamp just barely opens that don’t help. The pad is a hard foam, can you use PSA paper on that

View jbay's profile

jbay

2603 posts in 1019 days


#11 posted 03-10-2018 04:44 PM

I don’t use them anymore, but when I did I would pre-fold the paper before trying to put it in.

60 grit is pretty brittle. Try 80, and honestly 100 should be enough.

Not sure what you are trying to sand?

View Rich's profile

Rich

3548 posts in 710 days


#12 posted 03-10-2018 05:14 PM

The modern papers are pretty flexible. I put 60 grit in my 1/2 sheet Makita without a problem and use it to flatten mesquite rounds for lazy susans. I’d never bother to put anything coarser than maybe 120 in a 1/4 sheet sander.

I highly recommend the DeWalt DWE6411 for a 1/4 sheet unit for $50 at HD. Like I said earlier, they took the Bosch design where the paper clips in the front of the sander, and the rear clamp is designed to tighten the paper as it closes. I don’t think the Bosch unit is available anymore.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

View Sawdust4Blood's profile

Sawdust4Blood

408 posts in 3142 days


#13 posted 03-10-2018 05:33 PM

A little bit hard to fully grasp the situation from the sparsity of information provided. I typically think of a ROS as a finishing sander but 60 grit is a really aggressive abrasive for removing a lot of material (not finishing). Without knowing what you’re trying to do, I’d wonder if (A) a 1/4 or half sheet ROS is really the best choice of tool, or (B) if you might be starting with a grit that is more aggressive than you need to use.

Just my thoughts (which are typically worth less than two cents)

-- Greg, Severn MD

View Karda's profile

Karda

1235 posts in 674 days


#14 posted 03-10-2018 06:27 PM

I inherited the sander I don’t use it much and don’t have much need for a sander. I do use it occasionally. I was using it to clean something up for a project done even remember what. The sander is close to a half sheet. but the clamping system is quite tight. It is very hard to bend the paper around to go in the clamp. If I get another I will get PSA

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