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  1. #1
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    Default Radius Sanding blocks-

    Do you guys make your own radius sanding blocks and if so how?

    Regards

    Greg

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  3. #2
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    Page 69 of the latest edition of American Luthier has instructions on making radius blocks using a router. American Luthier is the quarterly journal of the Guild of American luthiers....an organisation well worth joining if youre serious about luthiery.
    Whatever note you blow youre never more than a semitone away from the correct one....(Miles Davis)

  4. #3
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  5. #4
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    in martin koch's book there is a tutorial on how to make one my using thin pieces of plywood.

    the basic idea is to get some thin pieces of plywood (2-3mm, thinner the better) and eaither rout out a piece of wood, or screw 2 pieces onto the side so they stick up. then you screw a few layers of the thin ply so that they lay across the raised sections and are screwed into the bottom of the chanel. he gives a formula for what radius which depends on the height of the sides (or depth, either way) and the width of the thing.
    im planning on trying it for my guitar im about to start (going to get working on the template today). seems like a god idea for a home made one. the more layers you put on the better the arc will be.


    if anyone wants i can post the formula given, just ask.

  6. #5
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    Quote Originally Posted by RGM View Post

    Good to see you've had a look over that one, RG

    I've made a few of these for other building mates and they take a matter of minutes to pull out a 2 foot long radiussed block.
    I still can't believe how easy it is !!!


    Viva le safe-t-planer

    cheers, Stu

  7. #6
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    I may have to purchase a safe t planer... they go for about $100 right?


    I need a new 12" radius block, lost the last i think.

  8. #7
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    Thanks again for the info.

    Hey Stu,that looks pretty easy..Do you use the Safe T planer much?

    I have had one on my shopping list for a while but I keep asking myself how often I would use it?

    Black Lab,

    I found this on Martins (Kosch) site...

    http://buildyourguitar.com/resources/tips/radblock.htm


    This might have to do me this weekend ..

    Cheers Greg

  9. #8
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    Quote Originally Posted by RGM View Post
    I may have to purchase a safe t planer... they go for about $100 right?


    I need a new 12" radius block, lost the last i think.
    Here are a few options ;
    Carbatec $139.00 Aud
    Stew-mac $68.29 Aud + $18 postage

    Even cheaper if you bundle an order at stewmac and purchase in bulk.

    cheers, Stu

  10. #9
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    Quote Originally Posted by Strungout View Post
    Thanks again for the info.

    Hey Stu,that looks pretty easy..Do you use the Safe T planer much?
    To be honest, I don't use it all the time.

    But when it comes to making radiussed blocks at 9,10,12,16,20 degrees, it's invaluable.

    I can't overstate enough just how dang easy it is to do.
    (safety at all times )

    cheers, Stu

  11. #10
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    I rigged a pendulum cradle for my router with the centre set a bit less than the radius I wanted. I used the plunge of the router to get the finished radius.
    Mount the block under the router and swing the pendulum back and forth, cutting the set radius. Move the block through a little (depending on your bit diameter) and keep it up until you've cut the length block you're after.
    I did a little sanding afterwards to get rid of a few ridges and finished up with a pretty good block about 1200mm long.
    I used some chipboard for mine, but anything solid should do the job.
    Hope this helps

  12. #11
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    Nice big meaty Bosch router there Malibu. I picked up same machine cheap at local Mitre 10....came with two of every accessory.
    Whatever note you blow youre never more than a semitone away from the correct one....(Miles Davis)

  13. #12
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    Quote Originally Posted by oz tradie View Post
    Here are a few options ;
    Carbatec $139.00 Aud
    Stew-mac $68.29 Aud + $18 postage

    Even cheaper if you bundle an order at stewmac and purchase in bulk.

    cheers, Stu
    unfortunately its cheaper to buy in the states...

    I got mine from LMI $47.35US which today = $58.42 AU + they charged me $20US postage.....
    so much cheaper than carbatec or timbecon...
    great tool

  14. #13
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    Quote Originally Posted by kiwigeo View Post
    Nice big meaty Bosch router there Malibu. I picked up same machine cheap at local Mitre 10....came with two of every accessory.
    Yeah, I love it! They're unstoppable
    Unfortunately, it wasn't cheap when I got mine but I had a bunnings voucher itching to be used and this was the result.
    I still need a trimmer though... and a... and a...

  15. #14
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    Quote Originally Posted by Strungout View Post
    Thanks again for the info.



    Black Lab,

    I found this on Martins (Kosch) site...

    http://buildyourguitar.com/resources/tips/radblock.htm


    This might have to do me this weekend ..

    Cheers Greg

    thats the one, ill be using that on mine once i get to that stage

  16. #15
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    Quote Originally Posted by gratay View Post
    unfortunately its cheaper to buy in the states...

    I got mine from LMI $47.35US which today = $58.42 AU + they charged me $20US postage.....
    so much cheaper than carbatec or timbecon...
    great tool
    That's a good bargain right there.
    It's a versatile piece of hardware allright.
    I could use it alot more than I do, it's just.........I tend to forget
    I even have it until after I've used some other method

    cheers, Stu

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