Model Boat Mayhem - Forum

Technical, Techniques, Hints, and Tips => Other Technical Questions... => Topic started by: Aidi on November 30, 2009, 08:12:40 PM

Title: Wet & Dry Sandpaper
Post by: Aidi on November 30, 2009, 08:12:40 PM
Howdie,

Just a quick question about Wet & Dry...   I am in the process of sanding down my hull.   I am not too sure when to use the paper wet or dry?

What does the water on the paper achieve over it being dry?   

If someone could give me a few pointers on how best to use Wet & Dry it would be appreciated

Rgds
Aidi
Title: Re: Wet & Dry Sandpaper
Post by: FullLeatherJacket on November 30, 2009, 08:17:27 PM
Of what material is your hull made?
Title: Re: Wet & Dry Sandpaper
Post by: Aidi on November 30, 2009, 08:29:45 PM
Sorry, should have said in the first place!

Its the Billing Boats Mary Ann.   The hull planking is Obechi Planking.    I am also using P38 filler.

Rgds
Aidi
Title: Re: Wet & Dry Sandpaper
Post by: DickyD on November 30, 2009, 08:33:04 PM
Dont use it wet until you have paint on it.
Title: Re: Wet & Dry Sandpaper
Post by: craftysod on November 30, 2009, 08:44:34 PM
When used wet,the paper does not clog as much,as the water dispercess the excess paint.
A word of caution.if used wet on a wood hull and filler, use sparinglly to stop water ingress.
If you can get a near enough finish with sandpaper,then smooth off with dry wet'n'dry paper you should
get a nice finish.
One thing i forgot to mention,if the hull has been sealed,painted,you can use it wet,but as said before,try not to get
wood,p38 wet.
Hope that helps,somebody might correct me though
Mark
Title: Re: Wet & Dry Sandpaper
Post by: craftysod on November 30, 2009, 08:46:13 PM
To buddy Quick Dicky  O0
Title: Re: Wet & Dry Sandpaper
Post by: Greggy1964 on November 30, 2009, 11:34:22 PM
Another thing about wet 'n' dry is that if used dry and it clogs up :((

Run it under a tap and rub it with an old washing up brush (the type with plastic bristles) and it'll bring it up like new :-))

Allow it to dry out and start over, the trick is not to allow it to get too clogged up in the first place.

I would recommend you sand your hull dry as it bare wood using coarser grits to start with and working through to fine, even dry wood will come up polished if you keep working through to finer and finer grits.
Title: Re: Wet & Dry Sandpaper
Post by: CGAux26 on December 01, 2009, 07:10:53 AM
I use wet or dry sandpaper in the wet mode on fiberglass and styrene.  I keep a small bucket of water on the bench so that once the wet or dry loads up I slosh it around in the water to remove the buildup, shake it off and go back to sanding.  I wipe the surface with a damp paper towel to keep down the sanding "dust" while I am working.  This prolongs the life of the wet or dry.

I do the same thing with Scotchbrite pads.
Title: Re: Wet & Dry Sandpaper
Post by: Bryan Young on December 01, 2009, 06:51:21 PM
I use wet or dry sandpaper in the wet mode on fiberglass and styrene.  I keep a small bucket of water on the bench so that once the wet or dry loads up I slosh it around in the water to remove the buildup, shake it off and go back to sanding.  I wipe the surface with a damp paper towel to keep down the sanding "dust" while I am working.  This prolongs the life of the wet or dry.

I do the same thing with Scotchbrite pads.
And you can always use wire wool afterwards. BY.
Title: Re: Wet & Dry Sandpaper
Post by: Subculture on December 01, 2009, 07:59:44 PM
I use an airline to blow the dust off wet and dry, when used dry. Works quite well.
Title: Re: Wet & Dry Sandpaper
Post by: DickyD on December 01, 2009, 08:02:02 PM
I use an airline to blow the dust off wet and dry, when used dry. Works quite well.

Where does the dust go then ? {:-{
Title: Re: Wet & Dry Sandpaper
Post by: Martin [Admin] on December 01, 2009, 08:03:38 PM
Over my trousers!  >:-o
Title: Re: Wet & Dry Sandpaper
Post by: Subculture on December 01, 2009, 08:20:21 PM
Into the ether.
Title: Re: Wet & Dry Sandpaper
Post by: DickyD on December 01, 2009, 08:25:37 PM
Into the ether.
Oh, over everything else then. ok2
Title: Re: Wet & Dry Sandpaper
Post by: Shipmate60 on December 01, 2009, 08:29:03 PM
If you add a little washing up liquid to the water you are using it helps to ensure that is doesn't clog up so quickly and cleans easier too.
Title: Re: Wet & Dry Sandpaper
Post by: Aidi on December 01, 2009, 09:46:15 PM
Thanks for the tips chaps, very much appreciated.

Rgds
Aidi