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Design of a Static Table Saw

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Blog entry by k1114n posted 10-12-2009 11:46 PM 2623 reads 0 times favorited 5 comments Add to Favorites Watch

The aim of this project is to design and build a static-blade saw that replaces the rotating blade with a japanese handsaw blade which is very thin and removes little wood during the cut leaving a very thin ‘kerf’ (< 0.5mm). Japanese handsaws are well known to cut aggressively and unlike european saws they do so on the pull stroke. Also, the blades in japanese handsaws are designed to be easily removed from the handle. If this blade were fixed at a slight slope away from the initial workpiece position and securely held vertically in a clamping mechanism, the work piece could be slid over the blade giving a very fine and accurate cut – tests with such a blade held in a vice have proven this technique to be effective.

The completed design will need to include an adjustable guide to firmly position the workpiece relative to the blade as the wood is pushed over the blade, a blade clamping mechanism that facilitates fast change-over of blade, a rise and tilt mechanism to increase the depth of cut and to facilitate bevel cuts and a sturdy cabinet.

01.Nov.09—————————————————————————————————————————

Progress keeps on going, i have now reached a point where a basic shape and features have been selected. based on these, a very first draft CAD was done.

Important changes with respect to the BCT jointmaker pro are:
-only one sliding bench
-simplistic design
-hand clamps used to clamp structure onto table

-- Current Project 2009-2010: Static tablesaw w/japanese-blade



5 comments so far

View interpim's profile

interpim

1158 posts in 2925 days


#1 posted 10-13-2009 12:10 AM

I have seen this before, i can’t seem to find where though.

The saw was mounted teeth up at a slight angle away from the user. The wood was placed on the sled and pushed across the saw and it seemed to cut quite well, and surprisingly quickly.

-- San Diego, CA

View davidroberts's profile

davidroberts

1025 posts in 2953 days


#2 posted 10-13-2009 12:48 AM

interpim – I bet this is what you are thinking of. This item from Bridge City is similar to the description of K1114N’s idea. Of course the price is just nuts, IMHO

http://www.bridgecitytools.com/Categories/Woodworking+Tools/Jointmaker+Pro/

-- Better woodworking through old hand tools.

View SteveMI's profile

SteveMI

954 posts in 2761 days


#3 posted 10-13-2009 05:44 AM

I second the comment on price. Unless the wood was really soft (basswood), I can’t see why it doesn’t ride up or need some huge effort to push through. My experience hasn’t been to cut through material in one or two strokes like they show.

I have two pull saws now, first from HD and love it, second from Woodcrafters that doesn’t seem to be any where near as good. For certain jobs they are great.

Wheels are turning in my head on making something similar though. Had thought about using a pull saw blade for something like this before and couldn’t get too far on a practical design. I wanted to resaw the more exotic woods without losing so much to kerf.

Wonder about a powered mechanism to recipricate the blade mounted like they have with the sled. Need longer throw than saber saw. Maybe modify an old sawzall.

K1114N – you may be starting something here.

Steve.

View k1114n's profile

k1114n

4 posts in 2615 days


#4 posted 10-13-2009 01:03 PM

I already had a look at the BCT one before starting this project. Basically im going to try and design something very similar but that can be manufactured a LOT cheaper. Here’s a link to the BCT one for those who want to see more:

http://www.youtube.com/watch?v=3ruwZdaPjbs

-- Current Project 2009-2010: Static tablesaw w/japanese-blade

View stefang's profile

stefang

15512 posts in 2801 days


#5 posted 10-13-2009 03:28 PM

The idea behind this tool is great. A person living in an apartment wanting to do woodworking in the evenings could do quite a lot with this tool. Personally I think it is worth the price, and given the right circumstances I would pay it. On the other hand, if a quality likeness can be built in the shop, I would certainly consider giving it a go. It seems k1114n that you might have the ability to do this. If so, I hope you will blog it for us with specs so we can build one too. Thanks for this very interesting blog and good luck with developing your plans. I think it is a great project for an engineering student.

-- Mike, an American living in Norway.

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