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| last grit you use on spruce? http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10101&t=17055 |
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| Author: | Heath Blair [ Sat May 03, 2008 1:43 pm ] |
| Post subject: | last grit you use on spruce? |
coming out of the drum sander, what is the last grit you use on a spruce top? im ordering some sandpaper rolls and was wondering if i should buy something finer than 120. also, this particular top will have an abalone rosette. thanks. |
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| Author: | jonhfry [ Sat May 03, 2008 1:51 pm ] |
| Post subject: | Re: last grit you use on spruce? |
I bring mine down with 120 fine sanding comes later for me |
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| Author: | grumpy [ Sat May 03, 2008 2:03 pm ] |
| Post subject: | Re: last grit you use on spruce? |
80 |
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| Author: | David R White [ Sat May 03, 2008 2:20 pm ] |
| Post subject: | Re: last grit you use on spruce? |
80, it's quicker to take it down with a hand block once the box is closed than to change the roll on the drum sander. |
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| Author: | Hesh [ Sat May 03, 2008 2:29 pm ] |
| Post subject: | Re: last grit you use on spruce? |
80 or 120, what ever is on the machine at the time. Anything finer than 120 will still need to be sanded by hand or with a good ROS or you could still have lines from the drum sander paper. |
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| Author: | Heath Blair [ Sat May 03, 2008 3:15 pm ] |
| Post subject: | Re: last grit you use on spruce? |
excellent. thanks for the responses. |
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| Author: | Brock Poling [ Sat May 03, 2008 4:27 pm ] |
| Post subject: | Re: last grit you use on spruce? |
I use 150 to thickness spruce on the drum sander and then hand sand with a block for final finish to 220. |
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| Author: | Mattia Valente [ Sat May 03, 2008 4:29 pm ] |
| Post subject: | Re: last grit you use on spruce? |
I only have 80 for my drum sander. The ROS takes care of the scratches. |
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| Author: | grumpy [ Sat May 03, 2008 4:46 pm ] |
| Post subject: | Re: last grit you use on spruce? |
Since Rick isn't here to say it, anything after 80 on the thickness sander and you're just wanking.... Just bring it to thickness, then build it. Scrape the inside surface for gluing, then when the box is done, it's off to the orbital sander for the rest. |
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| Author: | Heath Blair [ Sat May 03, 2008 7:10 pm ] |
| Post subject: | Re: last grit you use on spruce? |
grumpy wrote: Since Rick isn't here to say it, anything after 80 on the thickness sander and you're just wanking.... Just bring it to thickness, then build it. Scrape the inside surface for gluing, then when the box is done, it's off to the orbital sander for the rest. you dont think that 120 or something close will save you some time later? especially if you are close to a thickness that you like, it seems like going from 80 to 220 could eat some material. this is my first guitar, so i honestly dont know. i went ahead and ordered some 120, then came back and read your post, grump. so after the box is closed, go back with random orbit to 220. got it. i was told i should go to 400 on the abalone rosette. anyone else go to a similar grit? or just 220? |
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| Author: | grumpy [ Sat May 03, 2008 11:15 pm ] |
| Post subject: | Re: last grit you use on spruce? |
you dont think that 120 or something close will save you some time later? Sure as hell won't make up for the time it took to change the paper on the thickness sander. Besides, it'll clog before you know. |
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| Author: | John How [ Sat May 03, 2008 11:44 pm ] |
| Post subject: | Re: last grit you use on spruce? |
I agree with Mario, anything finer than 80 is a waste on a drum sander. The purpose of the drum sander is not to produce a fine finish, it is to thickness the wood passing under its drums. |
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| Author: | Heath Blair [ Sun May 04, 2008 12:07 am ] |
| Post subject: | Re: last grit you use on spruce? |
that totally makes sense. i wasnt even thinking about the time it takes to change the paper. thanks guys. |
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| Author: | fryovanni [ Sun May 04, 2008 12:35 am ] |
| Post subject: | Re: last grit you use on spruce? |
80 for the Spruce is good. If you have Shell inlayed in your rosette a finer grit might make it a bit easier to smooth out the scratches. Rich |
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| Author: | grumpy [ Sun May 04, 2008 7:51 am ] |
| Post subject: | Re: last grit you use on spruce? |
Wood, plastic, or shell, scrape the rosette. thank me later... |
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| Author: | Alexandru Marian [ Sun May 04, 2008 8:03 am ] |
| Post subject: | Re: last grit you use on spruce? |
For example, with sandpaper you risk making a dip in the spruce around the rosette, since it is softer. |
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| Author: | Brock Poling [ Sun May 04, 2008 8:05 am ] |
| Post subject: | Re: last grit you use on spruce? |
grumpy wrote: Since Rick isn't here to say it, anything after 80 on the thickness sander and you're just wanking.... Just bring it to thickness, then build it. Scrape the inside surface for gluing, then when the box is done, it's off to the orbital sander for the rest. I don't disagree but I use the finer grit because it gives me a little finer control at the end when I thickness to target deflection. If I had a better thickness sander I might not need to do that. |
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