Power hacksaw - video

[Jon]

Power hacksaw. By JSK-koubou. 28:48 video:

[dbat74]

Power hacksaw. By JSK-koubou. 28:48 video:

Excellent job. Best I've seen. We need more like this and less of the dumb stuff.

[hemmjo]

It is a nice build. Not being at all critical of the design or execution of it.

I do have to ask the question. What are the advantages of a power hacksaw over a horizontal band saw? There much be advantages. Even a portable band saw, can be very effective and accurate.

Band saw uses every tooth on the blade and is always cutting. Chips are constantly ejected from the cut. A hacksaw very seldom uses all of the teeth. Typically 1/2 or less of the teeth are in use. When cutting wide stock, the center teeth often never have an opportunity to clear chips. By design a hacksaw is only cutting 1/2 of the time it is in use.

I have used a power hacksaw many times over the years. I cannot think of any situation where is is superior to a band saw.

Once more, these comments have nothing to do with the quality of this build, just questions for discussion.

[carl blum]

Hello Hemmjo:

While I have a 6x4 band saw, here are the advantages of a power hack saw:

The blades cost less and are easier to replace, a plus in a home shop. Since I don't have a band saw blade welder when I brake a blade I toss it.

You can saw through a hole with out braking the blade.

Thicker blades can be used for heavy cuts.

There might be others too.

Carl.

[Gadgeteer]

Nice, over-engineered build... but, if that's what floats your boat... great! I would never have a machine in my shop that distributes swarf on itself.

[hemmjo]

Nice, over-engineered build... but, if that's what floats your boat... great! I would never have a machine in my shop that distributes swarf on itself.

SO... you don't have any machines in your shop? All of the machines I have swarf all over themselves. I must not be using them right.

What is your secret? I am so curious what machines you might have that do not swarf all over themselves in operation.

[carl blum]

PS: It would be nice if the stroke was adjustable. You could slot the bar that is attached to the motor. Carl.

[dbat74]

I likewise would like to know. Being a machinist all my live and I never figured it out. Hmmmm ??

[carl blum]

Hi Gang:

Really the mess from the chips isn't bad for a saw. My band saw makes a bigger mess. If you put a vacuum inlet under the sawing area it could gather most of the chips. I might mount the VFD ( variable frequency drive ) farther from the chip area and screw the heat sinks to the aluminum frame.

It is a nice machine.

Carl.

[olderdan]

Regarding using all of the blade length, if you make the vice long enough it is a simple matter to insert a V block to use a new part of the blade. A small tray catches most of the swarf.