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AHHH I need paint managment!!
TopJimmyCooks:
Oh, wow, ok. It looks like you're using plywood for your side panels. the natural grain of wood has different densities in different areas. I.E if you have a piece of plywood faced with pine, the dark areas of grain are much harder due to more resin content, and will not sand down as fast as the light areas. Therefore, if you sand you have to use a sanding block or hard pad, to stay flat rather than follow the contours, so the softer areas are bridged over and you keep a flat surface.
In your case, if I'm reading the pic right, you've sanded valley's into the softer areas of wood. Or, the Zinnsers maybe raised areas of grain? (moisture in the finish can cause areas of wood fiber to expand or stick out, usually only an issue with water based finishes)
If you can do it without sanding through the top layer of wood on the plywood, you need to sand back to flat with a stiff sanding block and coarse grit paper, then sand back to the smoothness you want. then go back to painting. If any of this isn't clear let me know. I've finished a lot of cabinets, doors, etc. both with paint and stains.
mytymaus007:
--- Quote from: TopJimmyCooks on July 14, 2011, 03:36:24 pm ---Oh, wow, ok. It looks like you're using plywood for your side panels. the natural grain of wood has different densities in different areas. I.E if you have a piece of plywood faced with pine, the dark areas of grain are much harder due to more resin content, and will not sand down as fast as the light areas. Therefore, if you sand you have to use a sanding block or hard pad, to stay flat rather than follow the contours, so the softer areas are bridged over and you keep a flat surface.
In your case, if I'm reading the pic right, you've sanded valley's into the softer areas of wood. Or, the Zinnsers maybe raised areas of grain? (moisture in the finish can cause areas of wood fiber to expand or stick out, usually only an issue with water based finishes)
If you can do it without sanding through the top layer of wood on the plywood, you need to sand back to flat with a stiff sanding block and coarse grit paper, then sand back to the smoothness you want. then go back to painting. If any of this isn't clear let me know. I've finished a lot of cabinets, doors, etc. both with paint and stains.
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I used ann orbital sander at first because i needed to remove contact cement from the old laminate which was a total mess. Once i got the wood smooth i was ready for the primer after 2 coats i used a sanding block but it seemed to just sand the high levels of the plywood. If i tried without the block it worked but i think i would be there for a year to get it smooth. Should i hit it with the orbital with 120 grit or use coarser grit with a block
TopJimmyCooks:
--- Quote --- I used ann orbital sander at first because i needed to remove contact cement from the old laminate which was a total mess. Once i got the wood smooth i was ready for the primer after 2 coats i used a sanding block but it seemed to just sand the high levels of the plywood. If i tried without the block it worked but i think i would be there for a year to get it smooth. Should i hit it with the orbital with 120 grit or use coarser grit with a block
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Can you confirm whether it's plywood or particle board? are there really continuous ripples like the photo of the primer seems to show?
mytymaus007:
--- Quote from: TopJimmyCooks on July 14, 2011, 08:56:29 pm ---
--- Quote --- I used ann orbital sander at first because i needed to remove contact cement from the old laminate which was a total mess. Once i got the wood smooth i was ready for the primer after 2 coats i used a sanding block but it seemed to just sand the high levels of the plywood. If i tried without the block it worked but i think i would be there for a year to get it smooth. Should i hit it with the orbital with 120 grit or use coarser grit with a block
--- End quote ---
Can you confirm whether it's plywood or particle board? are there really continuous ripples like the photo of the primer seems to show?
--- End quote ---
Plywood
Ond:
PM Sent.