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Corsa Sport » Message Board » General Chat » Can MDF be sanded down with wet and dry to a finish that can be sprayed??


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Author Can MDF be sanded down with wet and dry to a finish that can be sprayed??
Claire Richardson
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Registered: 12th Feb 01
Location: West Yorkshire
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15th Sep 03 at 21:52   View User's Profile U2U Member Reply With Quote
As above. Need to know cause if it cant then I need to put a layer of filler over it.

Ta chucks

Claire

OOoops, wrong forum

[Edited on 15-09-2003 by Claire Richardson]
Mav 3000
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Registered: 16th Aug 01
Location: Leicestershire
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15th Sep 03 at 21:54   View User's Profile U2U Member Reply With Quote
I think in my limited experience you can sand it smooth, but I'd have guessed its too 'powdery' to spray as its pretty loose and dusty stuff. I'd be inclinded to line it first - would sealing it with PVA work? filler yeah, don't know to be honest though, so its probably best to ignore everything I've just written!
Trotty
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Registered: 22nd Feb 01
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15th Sep 03 at 21:55   View User's Profile U2U Member Reply With Quote
I think so yeah, but it'll soak all the paint straight up anyway - you'd have to use loaaads to get a decent finish.

Go with the filler route
Rob H
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Registered: 28th Oct 00
Location: Staffordshire Drives: Astra SRi
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15th Sep 03 at 21:57   View User's Profile U2U Member Reply With Quote
Yup can be, but like Trotty said, will absorb a lot of the primer to start with.

Soft wood and balsa wood can also get the same results if you've got the patience .
Savinforcorsaproject
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Registered: 3rd Aug 03
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15th Sep 03 at 21:58   View User's Profile U2U Member Reply With Quote
If u lay filler over the top of it u ganan have to sand it smotth right cnt leave it bumpey
Mav 3000
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15th Sep 03 at 21:58   View User's Profile U2U Member Reply With Quote
Could try filler primer, but I think filler would save you having to do it again, and again - one fell swoop etc
Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
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15th Sep 03 at 22:02   View User's Profile U2U Member Reply With Quote
i use pva, brush a layer on then it can be painted.
Mav 3000
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15th Sep 03 at 22:04   View User's Profile U2U Member Reply With Quote
PVA - I know it creates a seal so it must be ok, but i guess you use it as a final coat cos unce you sand it you'd obviously sand the seal away I'd guess.
Kris TD
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Registered: 25th Mar 02
Location: Ware, Hertfordshire
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15th Sep 03 at 22:08   View User's Profile U2U Member Reply With Quote
make your shape, brush with pva, then spray a couple of thick coats of hibuild primer, then smooth them off.
Drew
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15th Sep 03 at 22:10   View User's Profile U2U Member Reply With Quote
dont use wet and dry (as wet) as it will soak into the wood and the wood will expand
Mattb
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15th Sep 03 at 22:10   View User's Profile U2U Member Reply With Quote
use a base coat of satin wood paint, used it for my a-level tech project, sand it down till its smooth, rub it over and use spray primer.....
Claire Richardson
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Registered: 12th Feb 01
Location: West Yorkshire
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15th Sep 03 at 22:11   View User's Profile U2U Member Reply With Quote
Cheers chucks. Its the bottom half of my door pod, but their are only patches of MDF showing. The rest is either fibreglass or filler. The filler is tending to sand off tho rather than down. I think I'll put a thin coat of fibreglass paste over it.
Would've left it if I thought it would take the paint.
Thanks again

Claire
Drew
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15th Sep 03 at 22:12   View User's Profile U2U Member Reply With Quote
at work - we

sand with 180 grit paper, prime, denib, prime, denib, then top coat
Claire Richardson
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Registered: 12th Feb 01
Location: West Yorkshire
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15th Sep 03 at 22:14   View User's Profile U2U Member Reply With Quote



Claire

 
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