Chip out

I'm rather new to woodworking and I'm in the process of building my 2nd CBG and I seem to be having some issues with chip out. I'm using a Jigsaw so I know that is probably part of my problem, but just wondering if anyone has any helpful hints to avoid it.

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  • coping saw works really well. Drill a hole in the center undo the blade. Run the blade thru the hole and re attach the blade to the saw. Cut from the inside.

    -WY


    Robert Wickham said:

    Unfortunately, I need to cut a rectangular hole not a circle. I'll try clamping a piece of sacrificial wood on the backside and see how that goes. Thanks for the advice.

    Alan Roberts said:

    Well, then. As I said, drill a thin pilot hole all the way through, then drill half-way through from each side with the larger drill.

     

    For large holes, I use a forstner bit. What are you using?

    Robert Wickham said:

    Sorry, I should have included some more details. I am cutting holes in the top of the cigar box for some old guitar pickups I have laying around.
  • Amen on the forstner bit as well as driling halfway thru. I do this on the head when I need to drill tuner holes. Works extremely well

    -WY



    Alan Roberts said:

    Well, then. As I said, drill a thin pilot hole all the way through, then drill half-way through from each side with the larger drill.

     

    For large holes, I use a forstner bit. What are you using?

    Robert Wickham said:

    Sorry, I should have included some more details. I am cutting holes in the top of the cigar box for some old guitar pickups I have laying around.
  • How sharp is your blade, I cut all my F holes in the lid with an electric sabre saw, simular blade to a jig saw. I have no problem with chipout on the front side, some on the inside but that just gets sanded off.
  • dremel cutoff wheel

    Robert Wickham said:

    Unfortunately, I need to cut a rectangular hole not a circle. I'll try clamping a piece of sacrificial wood on the backside and see how that goes. Thanks for the advice.

    Alan Roberts said:

    Well, then. As I said, drill a thin pilot hole all the way through, then drill half-way through from each side with the larger drill.

     

    For large holes, I use a forstner bit. What are you using?

    Robert Wickham said:

    Sorry, I should have included some more details. I am cutting holes in the top of the cigar box for some old guitar pickups I have laying around.
  • Unfortunately, I need to cut a rectangular hole not a circle. I'll try clamping a piece of sacrificial wood on the backside and see how that goes. Thanks for the advice.

    Alan Roberts said:

    Well, then. As I said, drill a thin pilot hole all the way through, then drill half-way through from each side with the larger drill.

     

    For large holes, I use a forstner bit. What are you using?

    Robert Wickham said:

    Sorry, I should have included some more details. I am cutting holes in the top of the cigar box for some old guitar pickups I have laying around.
  • Well, then. As I said, drill a thin pilot hole all the way through, then drill half-way through from each side with the larger drill.

     

    For large holes, I use a forstner bit. What are you using?

    Robert Wickham said:

    Sorry, I should have included some more details. I am cutting holes in the top of the cigar box for some old guitar pickups I have laying around.
  • Sorry, I should have included some more details. I am cutting holes in the top of the cigar box for some old guitar pickups I have laying around.
  • Until we get photos and can make specific suggestions, here's two general suggestions on fighting chipout.

    *Try to have a sacrificial block of wood clamped behind what you're cutting through. Wood is less likely to splinter if held in place by a second piece.

     

    *Try to score where the cut SHOULD come through. If the wood chips, it is more likely to chip along the score line. One example is drilling your soundhole HALFWAY through the soundboard, flipping it and drilling the rest of the way. Any raggedness will be in the very center, and easily sanded off.

  • chip out on what?  neck? Box top?  pls describe the issue in more detail... even a few pics would help... 

     

    In general jig saw (as opposed to scroll saw and table top band saws) have a lot of vibration and are hard to keep from jerking sidewise as the blade goes up and down.

     

    the best,

     

    Wichita Sam

  • Had that, but if you can tell me where you are getting chip outs. I usually get them on the ends of wood stocks, when I drill holes for tuning machines, sometimes a hand plane will do that.

     

    What specifically are you working with and what type wood? Is it the box itself or the neck or parts thereof?

     

    -WY

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