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Author Topic: Balsa wood size cutter  (Read 2069 times)

Offline Chris Fretz

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Balsa wood size cutter
« on: February 02, 2019, 07:35:52 AM »
Anyone make a tool to cut out spars out of 1/4in balsa planks?
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Offline Dan McEntee

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Re: Balsa wood size cutter
« Reply #1 on: February 02, 2019, 08:10:40 AM »
   Master Airscrew makes a nice inexpensive tool that holds regular #11 blades. That and a straight edge and knife with a new blade is all you need. !/4 inch stock is getting too big to make one pass through a balsa stripper abd it needs to be done in successive passes. True up the edge of the sheet with the straight edge and knife. Make an edge sanding jig from  long piece of aluminum angle with sandpaper glued to the inside of one leg, and then sand the edge you just cut. The master airscrew unit is set to 1/4" and it has a face that follows the sheet edge. Use light pressure and make a light cut the length of the sheet and then repeat. If you have got quality sheet stock with straight grain it should only take three passes or so. Then sand the edge again before you cut the next stick, With some practice you can get really nice sticks. If you push the issue and try to do it in one pass, the blade may flex and make a wavy cut. Patience is the key here like it is with a lot of modeling stuff. If you have a nice grain pattern in the sheet and want too have all the sticks facing the same way when building, be sure to take a marker and make a stripe across the sheet before cutting so you can easily find that shared side later.
  The other strippers I have are intended for free flight models and don't go beyond 1/8" thickness or so.
   Type at you later,
    Dan McEntee
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Offline Larry Renger

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Re: Balsa wood size cutter
« Reply #2 on: February 02, 2019, 08:15:21 AM »
Use a band saw with a solidly mounted fence. Fast, accurate and repeatable.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Gerald Arana

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Re: Balsa wood size cutter
« Reply #3 on: February 02, 2019, 09:00:28 AM »
I prefer my table saw.

Jerry

PS: Its a Micro Mark. The old Dremel still works, but....

Offline Carl Cisneros

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Re: Balsa wood size cutter
« Reply #4 on: February 02, 2019, 02:22:26 PM »
Chris

dare I ask what we are making?    ??? ??? ???

Carl
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Offline Paul Wescott

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Re: Balsa wood size cutter
« Reply #5 on: February 04, 2019, 11:41:28 PM »
Chris

dare I ask what we are making?    ??? ??? ???

Carl

Apparently we are making 1/4” spars, are we not?

Paul W.
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Offline Chris Fretz

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Re: Balsa wood size cutter
« Reply #6 on: February 05, 2019, 03:41:15 AM »
Thanks for the replys guys! Much appreciated.
Chris

dare I ask what we are making?    ??? ??? ???

Carl

Nothing special right now,  maybe some spars in the future for a aeroplane.  ;D
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Offline Carl Cisneros

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Re: Balsa wood size cutter
« Reply #7 on: February 05, 2019, 07:38:08 AM »
ah, so,,,,,,,,,,,,

anything in particular?????
Carl R Cisneros, Dist IV
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Offline Chris Fretz

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Re: Balsa wood size cutter
« Reply #8 on: February 05, 2019, 10:11:27 AM »
ah, so,,,,,,,,,,,,

anything in particular?????
626 Mustang
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Offline Norm Furutani

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Re: Balsa wood size cutter
« Reply #9 on: February 05, 2019, 01:32:46 PM »
A couple techniques that work for me:

Master Airscrew Stripper- rather than sliding the stripper down the side of the sheet, I clamp the stripper to a board and bury the tip of the blade into the same board. This minimizes the blade wandering and you can strip thicker, harder stock than sliding the stripper. Feed the balsa sheet as if using a table saw.

Bandsaw wandering- the blade doesn’t seem to track parallel to your fence. The solution I use(there are others) is to draw a straight line parallel to the edge of a foot long scrap board. Cut to the line without using the fence, about half way through the board. Note the angle the board takes. Set your fence to this same angle. Should stop the blade wandering.

As for cutting 1/4” stock. My preference would be a table saw with a hollow ground planer blade.

Norm


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