Primitive Archer
Main Discussion Area => Bows => Topic started by: ShinneryOak on October 10, 2010, 10:14:05 pm
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I need some advice on prepping bamboo for backing. I haven't seen many specifics on what to use to get it down to thickness. My first try was with an orbital sander. Let's just say that was not sufficient. I know some use power planer/ jointers. Does anyone use a belt sander? I'm trying to figure out the best investment. I guess a planer would be best if I make a lot of laminated bows. I know just a little more than nothing about planers, though I have been looking at a $350 DeWalt model at Lowe's. any suggestions?
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I've done it with belt sander and a planer. Both work fine. I'd use whatever you are more comfortable with ;)
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I've used just a belt sander and I've used a bandsaw to reduce the bulk of the excess and sanded it smooth with the belt sander. BTW, I have a 6"x48" Grizzly table top belt/disc sander. On my first boo backed bow I used a block plane to reduce the boo. ::)
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On my first boo backed bow I used a block plane to reduce the boo. ::)
Wow I bet that got ugly at times.
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Nate, I was taking a class from Vinson Minor and that's how he started us. After we were half way through he showed us how to reduce the thickness with a band saw and belt sander. ::) ...but if necessary it can be done with a block plane! ;)
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Man I'd be nervous about catching an edge and splintering up the hole darn thing. Skill with hand tools is of underestimated value...
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I've used block planes to thin my boo, but it's a lot of work....also use belt sander and planer...the sander is less scary, but planer is quicker and less dust floating around....wear a mask!!!!
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I do what pappy said, but I also use a table saw to hog down to 1/4 in and barrel taper to the ends with my grissley sander or as Dean Torges does ,I sometimes use a jointer to taper.Barrrel taper isn't always neccessary, but helps the bamboo from over powering the wood on tilling.Don't have much luck with electirc table top planers with boo as the rounded side is to uneven and gets stuck in the rolls and won't feed. I think a electric hand planer does well too. Good Luck , watch the splinters and wear eye and nose protection. Denny
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I always use a simple block plane , does the job fine, takes a couple of hours to make a backing, thats fast enough for me, and like Eastern archer says , less dust
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Belt sander all the way...
0209
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Thanks to everyone for the feedback-a couple more questions...when using the bandsaw to thin it down, how thick do you leave it, assuming you'll then sand it down to 1/8th inch thick? (I ruined a piece with a bandsaw trying to take too much off.) Next question: do you put the sander in a vise and move the bamboo over it or clamp the boo down? Last one: a handheld belt sander vs. the bench type belt and disc combos?
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i use tapered boo you want it thicker in the middle1/8" on the ends and i use a belt sander and have used a blockplane.
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I use a planer/joiner to get it to thickness and then a block ,1"wide and 6" long to smooth it out. I like mine no more than 1/8" thich in the center of the boo and razor sharp on the sides. This shows the glue lines for me. Then I sand off that sharpness just a tad.
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A lot of people use a bench type belt sander. I takes a steady hand and patience. The longer the platen the better. If you go jointer or block plane, the cutting knives/blade must be sharp to produce results without tearing out. Reducing with a bandsaw also takes a steady hand, but isn't meant to get really close, just remove most of the waste. One of my favorite tools to use on boo is the toothing plane. It doesn't remove too much and no splinters! If you use a block plane, I would suggest wearing a leather glove. A sharp plane goes through boo easily, but splinters do happen!
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OK, I'm probably going with a sander. Leaning toward the bench versions. It looks like you have to go across the belt on those at a right angle to the belt movement, is that right? I don't see how it could go lengthwise with a long piece of boo or wood. Or you'd have to use the disk...this is me guessing again.
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Used a drawknife, and hand planes to thin mine. Beware of what Hillbilly61 said about razor sharp, as I have gotten some nasty cuts from sharp bamboo.
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I go lengthways on the belt. remember that Bamboo will bow, so you want something to press down on it when you sand it. I have found that feeding it back and forth on the front edge works well. Care needs to be taken though to not leaving it in one spot long as you will put indents in the backing.
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Yep, always long ways on a belt sander. I use a 36grit belt and can thin a piece in about 5 minutes. If you go cross ways you will ruin your bamboo in short order.
I need to make a bamboo thinning how to with various tools.
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Yep you do, :)I have been wanting to make one of them ,but not sure on how to thinn the boo,or how thin to get it. :)
Pappy
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Yeah Eric, that would be good. Have you put any more thought into the idea that you had, about a video of what to do if you run in X? Correcting problems and such in the bow building process?
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Yep Dave. Got 2 on my right hand from a few weeks ago :(