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| Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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#1
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Help please sanding staircase - sanding disc grades?
Hi,
I have started sanding my old staircase (just the handrail) by hand, being the stupid girl I am. I have now realised that my life would so much easier if I bought a Random Orbital Sander (gleamed from the many helpful posts in these groups.) I am thinking about a Bosch PEX (cheaper) or GEX (newer, more expensive) so any comments on these would be great. But my question is this: what grade of sanding discs do I need? The staircase is, I think, oak - the discs that seem to come with the Bosch are 120g, 80g, 60g - but which is needed for the actual sanding and which for the "polishing" action - I have no idea what any of this means. Thanks for any help you can give |
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#3
Posted to rec.crafts.woodturning
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Help please sanding staircase - sanding disc grades?
Hi, from one girl to another, we turners call sand paper, grits, and
you start with the lower numbers, and work your way up through to the higher number grits. The numbers tell you how many particles there are per square centimetre. (I think that's right). So moving up to a larger number of particles means you remove more of the scratches you made with the last piece of grit, until the scratches are so many and so fine that is feels just like a babies bum. Hope this help make sense of it. Just lately had to do a lot of sanding down and this time used a random orbital sander, of what bliss, my arms and wrists didn't need to spend the next two days recovering. Hotfoot. "BillinDetroit" wrote in message ... : wrote: : Hi, : I have started sanding my old staircase (just the handrail) by hand, : being the stupid girl I am. I have now realised that my life would so : much easier if I bought a Random Orbital Sander (gleamed from the many : helpful posts in these groups.) : I am thinking about a Bosch PEX (cheaper) or GEX (newer, more : expensive) so any comments on these would be great. : But my question is this: what grade of sanding discs do I need? The : staircase is, I think, oak - the discs that seem to come with the : Bosch are 120g, 80g, 60g - but which is needed for the actual sanding : and which for the "polishing" action - I have no idea what any of this : means. : Thanks for any help you can give : : : : Are you removing existing finish? If so, start with some TSP cleaning : solution to get the oily crud off and then follow with a chemical finish : stripper ... possibly getting into tight spots with a toothbrush : (someone elses' grin). : : Follow label directions (you'll want a paste-type) for clean up and / or : neutralizing. : : Then 120 grit will be enough if the new finish is going to be paint, but : you'll need to start there but go higher if you are applying stain and / : or varnish. : : Bill : : : -- : I'm not not at the above address. : http://nmwoodworks.com : : : --- : avast! Antivirus: Outbound message clean. : Virus Database (VPS): 000759-0, 07/23/2007 : Tested on: 7/23/2007 2:52:56 PM : avast! - copyright (c) 1988-2007 ALWIL Software. : http://www.avast.com : : : |
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#4
Posted to rec.crafts.woodturning
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Help please sanding staircase - sanding disc grades?
outofthewoods wrote:
Hi, from one girl to another, we turners call sand paper, grits, and you start with the lower numbers, and work your way up through to the higher number grits. The numbers tell you how many particles there are per square centimetre. (I think that's right). So moving up to a larger number of particles means you remove more of the scratches you made with the last piece of grit, until the scratches are so many and so fine that is feels just like a babies bum. Hope this help make sense of it. Just lately had to do a lot of sanding down and this time used a random orbital sander, of what bliss, my arms and wrists didn't need to spend the next two days recovering. Hotfoot. The bigger the number, the finer the scratches. Use the grits in sequence except that you might get away with jumping a few (one at a time) in the finer grits. For a (varnished) railing you probably can stop at 180 or 200. (Fine furniture would go higher ... much higher.) Make the last strokes in the direction of the grain. For paint, most likely 120 grit is more than good enough. -- I'm not not at the above address. http://nmwoodworks.com --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 000759-0, 07/23/2007 Tested on: 7/23/2007 7:33:06 PM avast! - copyright (c) 1988-2007 ALWIL Software. http://www.avast.com |
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#5
Posted to rec.crafts.woodturning
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Help please sanding staircase - sanding disc grades?
Or if you really want it to shine after taking it to 400 grit and finishing
with laquer, use the micro mesh pads on your RO sander. Cuts the need for rooton stone entirely. Great stuff, wash it in the pocket of your jeans and hang it up to dry and it's as good as new. Dennis "BillinDetroit" For a (varnished) railing you probably can stop at 180 or 200. (Fine furniture would go higher ... much higher.) Make the last strokes in the direction of the grain. For paint, most likely 120 grit is more than good enough. -- I'm not not at the above address. http://nmwoodworks.com --- avast! Antivirus: Outbound message clean. |
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