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| Raising The Grain? http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=39480 |
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| Author: | LarryH [ Sun Feb 24, 2013 1:18 pm ] |
| Post subject: | Raising The Grain? |
I was wondering how many take this step when finish sanding - and what technique you use? I was sanding a neck the other day and have a hard time getting the rasp/files marks out of the end grain on the heel so I decided to dampen the wood a bit and 'raise the grain.' It seemed to sand out a bit faster but I'm not sure of the genuine effect. Any others raising any grain? |
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| Author: | superspeedo [ Sun Feb 24, 2013 2:26 pm ] |
| Post subject: | Re: Raising The Grain? |
LarryH wrote: I was wondering how many take this step when finish sanding - and what technique you use? I was sanding a neck the other day and have a hard time getting the rasp/files marks out of the end grain on the heel so I decided to dampen the wood a bit and 'raise the grain.' It seemed to sand out a bit faster but I'm not sure of the genuine effect. Any others raising any grain? Hi, you could try using a cabinet scrapper witch will give you a smooth finish! Or sometimes i use a electric sander on the more harder wood.. |
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| Author: | Joe Beaver [ Sun Feb 24, 2013 4:37 pm ] |
| Post subject: | Re: Raising The Grain? |
I always raise the grain two or three times when I begin finish sanding. A carry back to Mr. Thornton and high school wood shop. |
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| Author: | Alain Moisan [ Sun Feb 24, 2013 8:53 pm ] |
| Post subject: | Re: Raising The Grain? |
superspeedo wrote: LarryH wrote: I was wondering how many take this step when finish sanding - and what technique you use? I was sanding a neck the other day and have a hard time getting the rasp/files marks out of the end grain on the heel so I decided to dampen the wood a bit and 'raise the grain.' It seemed to sand out a bit faster but I'm not sure of the genuine effect. Any others raising any grain? Hi, you could try using a cabinet scrapper witch will give you a smooth finish! Or sometimes i use a electric sander on the more harder wood.. Indeed a cabinet scraper will be far more efficient at removing rasp marks then just sanding, even after raising the grain. That said, raising the grain does make things easier to get the best surface possible. |
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| Author: | Colin North [ Mon Feb 25, 2013 7:01 am ] |
| Post subject: | Re: Raising The Grain? |
LarryH wrote: I was wondering how many take this step when finish sanding - and what technique you use? I was sanding a neck the other day and have a hard time getting the rasp/files marks out of the end grain on the heel so I decided to dampen the wood a bit and 'raise the grain.' It seemed to sand out a bit faster but I'm not sure of the genuine effect. Any others raising any grain? What Todd said. I'm using water based, so I do lift the grain while finish sanding, even if sealing with shellac. I would only add that if you are having problems removing rasp marks, what grade are you starting with? I use 3 grades of rasp, and even after the least coarse still have to start with P80 or P100 paper, and make sure all the rasp marks are gone first. then work up though the grades to P 320 (I also a cabinet scraper at stages sometimes - depends on the mood). Good lighting from all angles and touch are your best friends, to make sure all marks are removed at each stage.before progressing up the grades - if you find any marks, then go back to a coarser grade. Good luck! |
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| Author: | LarryH [ Mon Feb 25, 2013 10:48 am ] |
| Post subject: | Re: Raising The Grain? |
Todd Stock wrote: Remove rasp marks with wood files; remove cabinet file marks with narrower, finer mill file and scraper; blend scraper marks with a shaping sandpaper grit (150) on a firm backing (spruce scrap with relieved edges; then fair and smooth with 220. As Colin mentioned, trying to sand out rasp marks with sandpaper will be a challenge. Yeah that's the schedule I use - was just wondering about the raising the grain aspect. |
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| Author: | Alain Moisan [ Mon Feb 25, 2013 10:50 am ] |
| Post subject: | Re: Raising The Grain? |
Todd Stock wrote: Woods like figured maple do not respond well to being wetted - light application of water is all I would use. I personnally never had any issues grain lifting figured maple. Although maybe I don't use the same technique as others. I just use a damp cloth (ringed pretty well) and wipe it on the guitar. Then I dry it using a blow dryer. |
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| Author: | Stuart Gort [ Mon Feb 25, 2013 11:25 am ] |
| Post subject: | Re: Raising The Grain? |
Maple...although it doesn't have large grain pores it's still quite permeable. If you get too much water pooled on the surface it'll go deeper than you think...and it will stay in there a while. Use a spray bottle and mist it on until it's lightly damp....or Alain's method...any method that avoids pooled water on the surface will be fine. |
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| Author: | LarryH [ Mon Feb 25, 2013 12:31 pm ] |
| Post subject: | Re: Raising The Grain? |
Here's an interesting take on raising the grain. http://www.hardwoodlumberandmore.com/Ar ... Grain.aspx |
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