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Sandpaper for a model railroad

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Sandpaper for a model railroad
Posted by angelob6660 on Wednesday, February 15, 2017 12:16 AM

When I went to Home Depot a few days ago I noticed different varieties of sandpaper.

Smooth, Finish, and Rough. 

I know am not getting rough. So the question is what sandpaper to get to get out a nice smooth finish look?

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Posted by fourt on Wednesday, February 15, 2017 12:26 AM

I would say the finer the better. Like some of the sandpaper in headlight polishing kits.

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Posted by selector on Wednesday, February 15, 2017 12:33 AM

Look for 600 grit paper in the paints section.

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Posted by fourt on Wednesday, February 15, 2017 2:58 AM

I would go with 1000 or higher grit

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Posted by zstripe on Wednesday, February 15, 2017 3:26 AM

Angelob6660,

If You want a really smooth finish...don't even use sandpaper...sandpaper fills up with sanding dust real fast and You actually fill in the microscopic scratches with that same dust. You will also go through sandpaper faster. I recommend You try scuff pads.....right after priming for a ultra smooth finish, if that is what You desire. I use Mirka ultra fine, but there are other brands, like 3M. I buy them by the case, but You can also buy them single in Automotive Paint/body shop suppliers. They also can be washed and reused, unlike sandpaper. They do come in a large variety of finishes. I used to do a lot of 1:1 painting of cars/trucks and works just as well on Models:

https://mirka-online.com/18-111-448-mirka-mirlon-6-in-x-9-in-ultra-fine-scuff-pad-gray-qty-20.html

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Posted by mobilman44 on Wednesday, February 15, 2017 5:19 AM

Hi,

The OP's question leaves me asking...... what is to be sanded?   Is it plywood edges of benchwork?  Or a small plastic detail part, or ???

Obviously, one size / type doesn't fit all.  And as mentioned, depending on the job, emory cloth may be a better answer.

In any case, it wouldn't hurt to have both sandpaper and emory cloth on hand, in various grit selections............

ENJOY  !

 

Mobilman44

 

Living in southeast Texas, formerly modeling the "postwar" Santa Fe and Illinois Central 

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Posted by richhotrain on Wednesday, February 15, 2017 5:38 AM

mobilman44

The OP's question leaves me asking...... what is to be sanded?   Is it plywood edges of benchwork?  Or a small plastic detail part, or ??? 

Yeah, that's the question.  What is being sanded?  Cork, perhaps?

Rich

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Posted by richhotrain on Wednesday, February 15, 2017 5:50 AM

Alton Junction

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Posted by zstripe on Wednesday, February 15, 2017 7:13 AM

mobilman44
The OP's question leaves me asking...... what is to be sanded?   Is it plywood edges of benchwork?  Or a small plastic detail part, or ???

You and Rich bring up a great point.....for some strange reason (must be an old age thing) it totally slipped My mind when I answered this post, although when I started, I had it foremost in My thoughts...Duh!...No excuses..LOLBang Head

Take Care! Sigh

Frank

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Posted by richhotrain on Wednesday, February 15, 2017 7:30 AM

zstripe

 

 
mobilman44
The OP's question leaves me asking...... what is to be sanded?   Is it plywood edges of benchwork?  Or a small plastic detail part, or ???

 

You and Rich bring up a great point.....for some strange reason (must be an old age thing) it totally slipped My mind when I answered this post, although when I started, I had it foremost in My thoughts...Duh!...No excuses..LOLBang Head

Take Care! Sigh

Frank

 

Except that you could be right, Frank. You may have picked the right surface to be sanded.  Cool

Rich

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Posted by doctorwayne on Wednesday, February 15, 2017 8:25 AM

I keep a wide range of sandpaper on hand, as you never know when you're going to need any particular grade.  It's not that I'm all that interested in sandpaper, but I came into a great deal of it some years ago in a house which we purchased.
The grades ranged from #36 garnet paper (great for sanding cork quickly) through a complete range of paper and cloth-backed sandpaper of many grades and abrasive materials to wet/dry sandpapers from #50 to #3600.  I didn't have need of a lot of the latter, and sold most of it to a nearby body shop:  there was enough of that type alone to fill the box of my pick-up right to the top!
I use all of the grades I have in model railroading, depending on what needs to be done, and I have some that don't clog readily at all...very long-lasting and easy to use.

Wayne 

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Posted by UNCLEBUTCH on Wednesday, February 15, 2017 8:54 AM

Like the other guys said;what are you sanding? just to reduce size? or prepare to paint/ or to add texture.

I use 80 thru 400, each has thire place.

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Posted by BroadwayLion on Wednesday, February 15, 2017 9:35 AM

LIONS do not bother with sand paper, except ro use as roofs on flat roof buildings.

ROAR

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Posted by angelob6660 on Wednesday, February 15, 2017 10:46 AM

To all people who asked.

What I'm sanding is a small strip of 1/2 x 3/4 inch Pine moulding wood. It will be the frame of the layout. Examples for Switching Work on Southern Ry. and the MRVP Thomas layout project. ( If you remember MRVP posted on YouTube).

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Posted by NVSRR on Wednesday, February 15, 2017 11:57 AM

Without knowing the wood current condition.  Ie. How rough  is it currently.  I would say a 200. 250.  Then 400. To finish it.  

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Posted by Bob Schuknecht on Wednesday, February 15, 2017 1:42 PM

BroadwayLion

LIONS do not bother with sand paper, except ro use as roofs on flat roof buildings.

ROAR

 

I have a building with a sandpaper roof on my layout. That is exactly what I thought of when I read the thread title.

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Posted by j. c. on Wednesday, February 15, 2017 2:09 PM

for general sanding i use open coat don't seem to clog as fast , for finer i prefere wet or dry.

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Posted by zstripe on Wednesday, February 15, 2017 2:41 PM

Angelob6660,

Please try next time to include all pertinent info regarding Your thread title to help others help You. Would make it much easier to know what You want to use something for. I for one would not have answered.....any and all parting stop I ever bought came plain and smooth Pine, never needing a sanding and I use a lot of 3/4 x 3/4 either rubbed on wood stain or brushed.

Take Care! Big Smile

Frank

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Posted by angelob6660 on Wednesday, February 15, 2017 2:44 PM

NVSRR

Without knowing the wood current condition.  Ie. How rough  is it currently. 

The pieces are almost clean with some tiny splinters.

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Posted by BigDaddy on Wednesday, February 15, 2017 5:22 PM

OK now we know the purpose.  Wood is generally sanded with increasingly finer grits of sandpaper, because it's actually quicker that way.  The higher the number, the finer the grit.

60-120 would probably give you more scratches than you already have.  If you were doing a project with salvaged wood, you might start there.  BUT that is NOT what you are doing. 

220 would quickly knock off the fine splinters then quickly change to 320, and finish with 400 or 600 if you are perfectionist.  To get an almost shiny finish, you have to go to the auto parts store and get some 1000, or 2000 grit, but that is overkill for bench work.  I used 1200 to get an ultra smooth finish on pistol grip made from burl walnut.

The stuff that is sand colored, wears out quickly.  Garnet is much more durable.  3M has a purplish sand paper that is extremely durable.  I have limited experience with sanding sponges.  I expect you pay for the "convenience" of the little block.

Wet dry sandpaper is handy to have for sanding both metal and wood, but again, you don't need that.

Henry

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Posted by fourt on Thursday, February 16, 2017 1:55 AM

 I was thinking the OP wanted to sand plastic or some think like that to get a smooth finish. So yes depending on what you where going to do with the sand paper would decide what type to use.

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Posted by rrebell on Thursday, February 16, 2017 9:53 AM

For what he is trying to do, asuming it is raw wood, is urathane it first, then sand as that will help glue the fibers together, otherwize on a soft wood, you could sand forever and new splinters could occur.

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Posted by ROBERT PETRICK on Thursday, February 16, 2017 11:21 AM

rrebell

For what he is trying to do, asuming it is raw wood, is urathane it first, then sand as that will help glue the fibers together, otherwize on a soft wood, you could sand forever and new splinters could occur.

Yes, I agree. The urethane kinda locks the fuzzies into the matrix and then the sandpaper shears them off cleanly.

Robert 

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Posted by angelob6660 on Thursday, February 16, 2017 12:30 PM

That might be a good idea using urethane, and than sanding the wood. Since I had dogs there drool will stop the cracking and other problems that might occur.

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Posted by riogrande5761 on Friday, February 17, 2017 10:18 AM

fourt

 I was thinking the OP wanted to sand plastic or some think like that

Such is our typical topic here at MR Forums and others have to spend a day or two interrogating the OP to find out enough detail to help the poor sod.

Lesson here:  OP's please post some background information - you'll get help a heck of a lot sooner that way.  Just sayin...

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