laser cut cordwood saw blades

[Renze]

Our cordwood saw is wearing blades way too fast and it doest cut fast enough. i was thinking of having a saw blade laser cut from a 3 or 4mm Hardox 500 plate, and bend the teeth out by hand. (my uncle is an expert on setting sawblade teeth)

Has anyone ever tried that before ? and what is a good teeth spacing ? I was thinking a tooth every 10 degrees (36 in total) on a 500mm diameter blade... 30mm deep, and that means about 40mm spacing.
Whats the best tooth shape and angles ? cutoff saw blades are too slow for firewood sawing...

 

[leonz]

Our cordwood saw is wearing blades way too fast and it doest cut fast enough. i was thinking of having a saw blade laser cut from a 3 or 4mm Hardox 500 plate, and bend the teeth out by hand. (my uncle is an expert on setting sawblade teeth)

Has anyone ever tried that before ? and what is a good teeth spacing ? I was thinking a tooth every 10 degrees (36 in total) on a 500mm diameter blade... 30mm deep, and that means about 40mm spacing.
Whats the best tooth shape and angles ? cutoff saw blades are too slow for firewood sawing...

Hello Renze,


Before you attempt anything I would contact Casey Creamer who is known as the Saw Doctor here in the United States for his opinion.

From what I know of Hardox having worked with it and
with it in mining I will say this; a saw blade lazer cut from
Hardox plate and then hammered will be more trouble than
its worth because of breakage at the tip.

I would also ask Casey who makes good blades for cordwood saws or contact one of the builders of the firewood processors that build them here(at least 4 that I know of) that use circular saws in the United States and Canada.

If your having this much trouble with blades perhaps looking at the chomper firewood processor is a better option simply because it shears and splits rounds at the same time and a 12 inch long round/block can be split into 8 pieces in 6 seconds with a fully automatic Simplex 14 model. the number fourteen indicates the largest diameter that model can shear and split-they also offer a 16 inch model as well.

EDIT: Option two would be to wash the logs at each cut prior to cutting them as this will remove a barge load of dirt just as it is done at the sawmills prior to debarking sawlogs.

 

[Renze]

Circular Saw Blades CMT Tools - In depth

it seems laser cutting is used for manufactured saw blades as well... i will take the expansion slots into consideration... Hardox can be bent, but not very sharply... you dont need teeth perpendicular to the blade so i dont think its going to be a problem...

 

[Danno1]

.


Renze,

You should look into Water Jet cutting. There is no HAZ to change the hardness of the blade tips.



.

 

[SPIKER]

For the effort and repair-ability, I would look at standard blades with replaceable teeth/cutters. there are a lot of them available and even 2nd hand. dont waste time & $ rebuilding the wheel of steel that been used for 100's years

Mark

 

[powerpace]

Cutting too slow may mean not enough power for the saw blade diameter. No mention of power. What are you cutting? Was it always slow cutting? I'm thinking more of a sharpening problem. Fewer teeth with more power may be the answer.

 

[jimgerken]

Try one of these:
Bailey's - Lucas Mill 21" Saw Blade for Model 8 Sawmills
They are brazed carbide inserted five-tooth blades, with about a 3/16" kerf. Very tough blade, cheap to rebuild too.