Sanding Sealer Question

[Dizzwold]

Hi Guys,

I have some walnut I'm using for pelmets around my living room.

I'm sanding them back with 80, 120, 240 grit then finishing with 0000, Chestnut Cellulose Sanding Sealer and burnishing again with 0000 wirewool.

On one length I'd completed with the above process, I've had to sand part of it back to bare timber.

If I recoat the bare timber with the sanding sealer, will it create a tide mark where the fresh coat of sanding sealer meet/overlaps the existing sanding sealer?

Would I be better off to just sand the full length back and recoat with sanding sealer?

Dizzwold.

 

[Phil Pascoe]

I'd think you are working for nothing going beyond 240. No, you shouldn't get a line, especially if you've thinned the sealer which is always a good idea - I thin it 50/50 with cellulose thinners
Try using hot water - pour on, wipe off, go to lunch or knock off and leave it dry. It's surprising how much grain it'll raise, it can't do any harm and leaves no marks. Of course, you can do it between grits as well. Always worth a try, it's free.

 

[Blackswanwood]

I doubt you will create a tidemark I think I would wipe the dry edge of the already applied sanding sealer with meths using a lint free cloth immediately before applying to the adjoining piece. (That assumes it’s shellac based sanding sealer)

 

[Phil Pascoe]

He's using cellulose.

 

[Blackswanwood]

He's using cellulose.

Ah yes - sorry - as the youngsters say “my bad”!

 

[johnnyb]

No it won't have quite the same build but each coat of cellulose melts into the last and is the reason its usually sprayed if multiple coats are used as it drags.

 

[Dizzwold]

Hi Guys,

Thank you for your replies. I'm very grateful.

Can any of you explain what has happened to this piece. This has had the exact same process as previously explained (sanded with 80, 120, 240 grit, 0000 wirewool, sanding sealer and burnished with 0000 wirewool again).
The only difference with this and others I'd already made, is this piece was straight from the timber yard that morning and worked on that same day?

The sanding sealer went On as normal (not pooling or anything odd), but when I went back to it it looked liked I'd missed areas. So I recoated these parts again. Again this looked fine and normal, but later, yet again it looked liked I'd completely missed these areas?

 

[johnnyb]

Not sure but is it sapwood? Pale wood from outside of the tree.