Orbital sand paper question - Woodworking Talk - Woodworkers Forum
 4Likes
Reply
 
Thread Tools Display Modes
post #1 of 25 Old 05-22-2020, 10:37 AM Thread Starter
An Old Newbie
 
Join Date: Apr 2020
Location: Mountains of Virginia
Posts: 110
View SWrick's Photo Album My Photos
Orbital sand paper question

I have had 2 different manufacturers of orbit sanders and my current one is a very common Porter Cable a whenever I purchase new discs, only one of the five dust return cutout holes line up!

What is the deal?
SWrick is offline  
Sponsored Links
Advertisement
 
post #2 of 25 Old 05-22-2020, 11:50 AM
Moderator
 
John Smith_inFL's Avatar
 
Join Date: Jul 2018
Location: Central Florida
Posts: 2,181
View John Smith_inFL's Photo Album My Photos
Rick - photos of your issues will put everyone on the same page as you
for the most accurate responses.
(it is ok to mention the names of mfg. of the discs).

Edit: I remember seeing on another forum where a member made
a jig for accurately installing the paper discs to the pad.
was just a simple piece of wood with some dowels to help with alignment.
(I will try to find it).

this isn't the one, but, an example: (you can use 5 dowels instead of 3).

Orbital sand paper question-011282016a-main.jpg

.
TobyC, ScubaDoog and SWrick like this.

I am a painter: that's what I do, I like to paint things.

Last edited by John Smith_inFL; 05-22-2020 at 06:34 PM.
John Smith_inFL is online now  
post #3 of 25 Old 05-22-2020, 02:20 PM
Senior Member
 
Join Date: Jul 2016
Posts: 812
View Terry Q's Photo Album My Photos
Are you sure you are buying sandpaper with the correct number of holes? 5 and 8 hole are common on 5 inch sanders, although there are some manufacturers who use something else. Most of the sand paper suppliers offer paper in most every hole possibility, you just need to look for the correct one. Whatís worse is when you have two different sanders and they use different number of holes.
Terry Q is online now  
Sponsored Links
Advertisement
 
post #4 of 25 Old 05-22-2020, 02:48 PM
Senior Member
 
Join Date: Aug 2017
Posts: 2,568
View Tool Agnostic's Photo Album My Photos
Quote:
Originally Posted by SWrick View Post
I have had 2 different manufacturers of orbit sanders and my current one is a very common Porter Cable a whenever I purchase new discs, only one of the five dust return cutout holes line up!

What is the deal?
I would like to see photos of your sander bottom and the discs you bought. Some sanders have eight holes and some have five. I think that there are few with six holes, too.

It appears that you bought the wrong sanding discs. What about these, or something with the same hole pattern?
https://www.amazon.com/Sanding-100pc.../dp/B07413M1JX

You can also buy "universal" sanding discs that are compatible with both eight hole and five hole sanders. The Diablo sanding discs that I bought at the local Ganahl hardware store are like that:
https://www.diablotools.com/products/DCD050150H04G

In the meantime, just make do and punch out the extra holes you need to match. If it were me, I would punch out the extra holes, rather than running the discs with only one hole.

Caveat about Diablo discs:
I needed sanding discs to go with my Ridgid random orbital sander, so I bought packs of Diablo discs in assorted grits to get started. They were a familiar brand and the best value in the store at the time I bought them, but I can't say how Diablo discs compare with others in terms of quality. I am still using them. They work fine for my needs.
Tool Agnostic is online now  
post #5 of 25 Old 05-22-2020, 06:04 PM Thread Starter
An Old Newbie
 
Join Date: Apr 2020
Location: Mountains of Virginia
Posts: 110
View SWrick's Photo Album My Photos
Judging by the responses so far, I guess Iím really missing the obvious when buying sand paper discs!

I have a 5 hole Porter Cable and all of the sanding discs for 5 inch orbital sanders I see on Amazon are 8 hole discs.
Attached Images
File Type: jpg C72EC1B8-9A31-47D5-9D4D-628CA35DAEB7.jpg (602.2 KB, 33 views)
File Type: jpg B3F7A42C-3E50-4B9F-BDAA-7188F612E85D.jpg (586.1 KB, 31 views)
File Type: jpg 99DB3911-45B6-4E69-B4D8-FDCB0A2D027C.jpg (354.8 KB, 32 views)
SWrick is offline  
post #6 of 25 Old 05-22-2020, 06:28 PM
Moderator
 
John Smith_inFL's Avatar
 
Join Date: Jul 2018
Location: Central Florida
Posts: 2,181
View John Smith_inFL's Photo Album My Photos
Rick - is there a reason you do not buy 5 hole discs ?
(just wondering)
my PC-OS is an eight hole - I am motivated now to make
an alignment jig for it tomorrow.
I have bought several different types of discs, not regarding
the holes as most of my serious sanding is done outside so I don't
hook it to the shopvac very often. but when I do use the shopvac,
I use the correct 8 hole discs.
oh - when the velcro pad stops holding the discs, you can get a replacement
pad off of ebay for just a few bucks.

Name:  5 hole.jpg
Views: 53
Size:  24.2 KB

.

I am a painter: that's what I do, I like to paint things.

Last edited by John Smith_inFL; 05-22-2020 at 06:37 PM.
John Smith_inFL is online now  
post #7 of 25 Old 05-22-2020, 07:37 PM Thread Starter
An Old Newbie
 
Join Date: Apr 2020
Location: Mountains of Virginia
Posts: 110
View SWrick's Photo Album My Photos
I mostly buy from Amazon and always look for the best price so Iíve ended up with a huge box of sand paper discs with 8 holes thinking that itís a universal type that fits most brands.

Now that I know the deal, I have many discs yet to use and I will do as you do, sand outside!
Iím wondering how the correct discs with my hose attachment would work. Are they very effective?

Thanks for your response❗️
SWrick is offline  
post #8 of 25 Old 05-22-2020, 07:51 PM
Moderator
 
John Smith_inFL's Avatar
 
Join Date: Jul 2018
Location: Central Florida
Posts: 2,181
View John Smith_inFL's Photo Album My Photos
"dust free" sanding is directly related to your shopvac, filter, length of hose,
yada yada yada. . . check back with us after you find some 5 hole discs.
or - you can research to see if the 8 hole pad will fit your sander.
if it does, then you can use all the 8 hole discs with the vac as needed.
then, make a jig for easy alignment.

.

I am a painter: that's what I do, I like to paint things.
John Smith_inFL is online now  
post #9 of 25 Old 05-22-2020, 08:10 PM
Senior Member
 
Join Date: Aug 2017
Posts: 2,568
View Tool Agnostic's Photo Album My Photos
Quote:
Originally Posted by SWrick View Post
Judging by the responses so far, I guess I’m really missing the obvious when buying sand paper discs! I have a 5 hole Porter Cable and all of the sanding discs for 5 inch orbital sanders I see on Amazon are 8 hole discs.
Did you miss the Amazon link in my post above? The one for the "5 Inch 5 Holes Sanding Discs, 100PCS 60 80 120 180 220 Grit Sandpaper Assortment" for $18?

Repeating it here:
https://www.amazon.com/Sanding-100pc.../dp/B07413M1JX

In addition, the Diablo sanding discs that I use fit both 5 and 8 hole sanders. I mentioned that above, too. They are also available from Amazon. There are too many options on Amazon to include links. Just search on Amazon for "Diablo 5 inch sanding discs" to see them.

Mesh sanding discs work with any hole pattern. Mirka Abranet makes 5 inch sanding discs that are highly regarded for their quality. They have a reputation for lasting a long time before needing replacement. You can buy them on Amazon too, and I noticed that there are other companies making similar mesh sanding discs.
Tool Agnostic is online now  
post #10 of 25 Old 05-23-2020, 07:05 AM Thread Starter
An Old Newbie
 
Join Date: Apr 2020
Location: Mountains of Virginia
Posts: 110
View SWrick's Photo Album My Photos
Quote:
Originally Posted by Tool Agnostic View Post
Did you miss the Amazon link in my post above? The one for the "5 Inch 5 Holes Sanding Discs, 100PCS 60 80 120 180 220 Grit Sandpaper Assortment" for $18?

Repeating it here:
https://www.amazon.com/Sanding-100pc.../dp/B07413M1JX
I did see your link after researching again on Amazon for 5 hole sanding discs and I appreciate your detailed response. I never searched enough on Amazon while thinking the 8 hole must be made in order to accommodate different manufacturers of sanders, however the spacing is totally different.

My question is, how effective is dust extraction when using these sanders indoors? (and Iím not Alain about a Festool sander) Thanks again!
SWrick is offline  
post #11 of 25 Old 05-23-2020, 09:43 AM
Senior Member
 
Join Date: Aug 2017
Posts: 2,568
View Tool Agnostic's Photo Album My Photos
I wish I could answer your question, but the honest truth is that I do not know. I do woodworking mostly outdoors, so it would be hard to tell for sure. I believe that dust extraction works very well when I connect the Ridgid random orbital sander to the shop vac when using the Diablo discs. Dust escape is much worse with the small filter bag that came with the sander. Despite the apparent effectiveness of dust collection with the shop vac, I still wear a mask, but I always wear it when I am using any woodworking machine, doing hand sanding, or cleaning up.

The Ridgid sander has an eight hole pattern. The Diablo discs have four large holes that match up with the holes on the sander, so four holes are open and four are covered. There are other smaller holes on the Diablo disks which are also covered because they do not match up with my sander. The smaller holes are for five hole sanders like yours, and perhaps others.

I used the sander yesterday with the shop vac, and very little dust seemed to escape. There was essentially no dust on the board I was sanding. There was a very tiny amount of dust on the outside of the sander near three small rectangular motor vent holes, which I noticed when I put away the sander, but the sander was clean overall.

The shop vac creates suction at the work surface that make it harder to control the sander. Not that much harder. The vacuum hose ridges can also catch on board edges, the workbench, etc.

Hopefully others can offer better answers for your question about dust escape with indoor use.
Tool Agnostic is online now  
post #12 of 25 Old 05-23-2020, 01:18 PM Thread Starter
An Old Newbie
 
Join Date: Apr 2020
Location: Mountains of Virginia
Posts: 110
View SWrick's Photo Album My Photos
I never wear a respirator but should start, guess itís never too late.

Iím also soon to be looking for a new orbital sander and from all that Iíve read, it seems the Bosch sander for about $79 is a good one to purchase.
SWrick is offline  
post #13 of 25 Old 05-23-2020, 01:42 PM
Moderator
 
John Smith_inFL's Avatar
 
Join Date: Jul 2018
Location: Central Florida
Posts: 2,181
View John Smith_inFL's Photo Album My Photos
Rick - what a lot of people don't take into consideration
is that the more holes you have, the less abrasive material
you have in that "ring of holes".
but - the dust removal is greater with 8 holes vs 5 holes.
of course, nobody from NASA Rocket Science Division has ever
done a scientific study on the subject.
just something else for the Millenials to ponder over.

Name:  George.jpg
Views: 45
Size:  69.4 KB

.

I am a painter: that's what I do, I like to paint things.
John Smith_inFL is online now  
post #14 of 25 Old 05-23-2020, 06:36 PM
Ancient Termite
 
Join Date: Mar 2018
Location: Huntington Beach, California
Posts: 741
View NoThankyou's Photo Album My Photos
Just use a nail to punch holes where the holes in the sander base are. It really doesn't make much difference as the major sanding work is only done by the outer inch or so of the sanding disk.

OK, before everyone jumps on me, just feel the sanding disk when it is worn out. The outside circumference is worn while the closer you get to the center, the fresher the sandpaper is.

Rich
In furniture 1/32" is a Grand Canyon
NoThankyou is offline  
post #15 of 25 Old 05-23-2020, 06:44 PM
Senior Member
 
Rebelwork's Avatar
 
Join Date: Jan 2012
Location: Odessa,MO
Posts: 1,511
View Rebelwork's Photo Album My Photos
Quote:
Originally Posted by NoThankyou View Post
Just use a nail to punch holes where the holes in the sander base are. It really doesn't make much difference as the major sanding work is only done by the outer inch or so of the sanding disk.

OK, before everyone jumps on me, just feel the sanding disk when it is worn out. The outside circumference is worn while the closer you get to the center, the fresher the sandpaper is.
It wears on the center out. The only sand paper worn on the outside first are the ones that eat the edges of veneer.Only time im on the edge of the sander is when trying to get scratches out if there not too deep

Last edited by Rebelwork; 05-23-2020 at 06:47 PM.
Rebelwork is online now  
post #16 of 25 Old 05-23-2020, 08:57 PM
Senior Member
 
Join Date: Feb 2019
Location: Connecticut
Posts: 190
View redeared's Photo Album My Photos
The outer edges wear first because people tend to tilt the sander to sand faster. I constantly have to remind people at the senior center wood shop not to do it as it makes grooves.
redeared is offline  
post #17 of 25 Old 05-24-2020, 07:08 AM Thread Starter
An Old Newbie
 
Join Date: Apr 2020
Location: Mountains of Virginia
Posts: 110
View SWrick's Photo Album My Photos
Quote:
Originally Posted by Tool Agnostic View Post
Did you miss the Amazon link in my post above? The one for the "5 Inch 5 Holes Sanding Discs, 100PCS 60 80 120 180 220 Grit Sandpaper Assortment" for $18?

Repeating it here:
https://www.amazon.com/Sanding-100pc.../dp/B07413M1JX

In addition, the Diablo sanding discs that I use fit both 5 and 8 hole sanders. I mentioned that above, too. They are also available from Amazon. There are too many options on Amazon to include links. Just search on Amazon for "Diablo 5 inch sanding discs" to see them.

Mesh sanding discs work with any hole pattern. Mirka Abranet makes 5 inch sanding discs that are highly regarded for their quality. They have a reputation for lasting a long time before needing replacement. You can buy them on Amazon too, and I noticed that there are other companies making similar mesh sanding discs.
Quote:
Originally Posted by John Smith_inFL View Post
Rick - what a lot of people don't take into consideration
is that the more holes you have, the less abrasive material
you have in that "ring of holes".
but - the dust removal is greater with 8 holes vs 5 holes.
of course, nobody from NASA Rocket Science Division has ever
done a scientific study on the subject.
just something else for the Millenials to ponder over.

Attachment 390013

.
George Burns, true words, hindsight is 20/20! Thanks
SWrick is offline  
post #18 of 25 Old 05-24-2020, 07:47 AM
Senior Member
 
Join Date: Apr 2015
Location: NE FL
Posts: 478
View DrRobert's Photo Album My Photos
You are rightly concerned about dust. Sanding is without a doubt the most dangerous task in wwíing.

Now I may lose you, But hear me out. Because many people can never see themselves shelling out $400+ for an orbital sander (and I was one of them) I wanted to see what all the fuss was about. All I can say it is worth every penny. Superior dust collection, quieter, far less vibration, note efficient sanding.

However, I would say my air sander is about as good (3M). Of course that has huge compressor reqís. I feel no need for a dust mask when using either of these.

Although a standard shop vac will work, without a HEPA filter youíre not really accomplishing the job. Here again, a dust extractor is investment that seems like a luxury you quickly realize is worth every penny.

Sandpaper quality is something to look at too. I buy most all mine from Industrial Abrasives.

Robert
DrRobert is offline  
post #19 of 25 Old 05-24-2020, 08:00 AM
Senior Member
 
Rebelwork's Avatar
 
Join Date: Jan 2012
Location: Odessa,MO
Posts: 1,511
View Rebelwork's Photo Album My Photos
Quote:
Originally Posted by redeared View Post
The outer edges wear first because people tend to tilt the sander to sand faster. I constantly have to remind people at the senior center wood shop not to do it as it makes grooves.
Exactly....in a cabinet shop and especially in a furniture shop you are trained not to ride the edges.. I see many here are untrained....
Rebelwork is online now  
post #20 of 25 Old 05-24-2020, 08:26 PM
Senior Member
 
Join Date: Nov 2019
Posts: 108
View B Coll's Photo Album My Photos
I few years back I switched to Abranet disks by Mirka. They make an entire spectrum of grits, you will avoid any finish problems from stearates, they last long, and are affordable. The best part is they give you a velcro pad which attaches to your sanding pad and the discs slap right on without having to align them.https://mirka-online.com/9a-232-ap-m...CABEgJRG_D_BwE
B Coll is offline  
The Following User Says Thank You to B Coll For This Useful Post:
Rebelwork (05-25-2020)
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Woodworking Talk - Woodworkers Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome