Thread: Hair Thin Cuts in a Metal Comb

Yep, down to 0.1mm

Originally Posted by frnnd

Should be possible to do it with a plate of aluminum?

I've seen some music box combs made out of Al.

Here's a link showing various sizes of Jewellers saw blades down to 0.17mm
https://www.cooksongold.com/blog/jew...-to-saw-blades
There are small scroll saws available used by jewellers but not sure they would hold the smaller blades.
I'd be trying youtube to see what they do with these saws.

I've seen a jeweller manually cutting straight cuts about 15 mm long with a 0.2mm blade in a Jewellers saw in some <1 mm thick silver sheet and it looked like it took considerable skill just so's not to break the blade. I remember she said getting decent underside support reduced the likelihood of breaking blades. Again check out Youtube to see their setups.

Thank you all very much for your answer and ideas. I think I'm gonna try the slitting saw or the saw blade, which one is more precise and cheaper for that job.
Still don't understant why a cnc laser cutter won't do it...

Thanks again!

The slitting saw is a circular saw blade. It needs to be mounted to a holder and is used in either a milling machine or a lathe, with the work piece mounted on a moving table of some sort, so it can be 'pushed' into the blade, without twisting out of line.
Coolant used to keep it...cool...or go slow.

Maybe try a different laser cutter company.
But be clear on what you want - material, thickness, quantity.

Originally Posted by russ57

The slitting saw is a circular saw blade. It needs to be mounted to a holder and is used in either a milling machine or a lathe, with the work piece mounted on a moving table of some sort, so it can be 'pushed' into the blade, without twisting out of line.
Coolant used to keep it...cool...or go slow.

Maybe try a different laser cutter company.
But be clear on what you want - material, thickness, quantity.

Yes, I was talking about the Jewellers saw blades and the slitting saw.
https://www.cooksongold.com/blog/jew...-to-saw-blades

In your opinion, what would be best for this job?
In any case, I would have to buy a milling machine, a mini lathe or a jigsaw table.
I think the mini lathe or the milling machine would be best.

The other side of the metal comb has this lower level that seems to be made with a milling machine.

índice.jpg

So if I buy a milling machine, it should be possible to do both the cuts and the thinning on the other side, right?

Sorry for my wrong spelling.

If you use a slitting saw I would make sure to have some sacrificial backing material behind the comb
The metal is thin and the fingers long, so they will be prone to bending under the cutting forces

So the backing piece will stiffen the job and prevent it moving

Originally Posted by TommyGMachining

If you use a slitting saw I would make sure to have some sacrificial backing material behind the comb
The metal is thin and the fingers long, so they will be prone to bending under the cutting forces

So the backing piece will stiffen the job and prevent it moving

All of this is a lot of work to cost less than a dolar...
I really want to know what those chineses do to make it so cheap.

I know we keep saying this, but....CNC

They will have machines set up with jigs dedicated to producing that one part all day, robotic loading and unloading

Originally Posted by elanjacobs

I know we keep saying this, but....CNC

They will have machines set up with jigs dedicated to producing that one part all day, robotic loading and unloading

And any person within the manufacturing process or supply chain is likely subject to a myriad of human rights abuses. The race to the bottom doesn’t come without human cost associated. Pushing those out for $1 is at that price point.

"I really want to know what those chineses do to make it so cheap"

As Elan said, also they work for practically nothing.

i don't thing they were made in a CNC , too slow ,i think they would be gang milled with the different dia, slitting saws in a stack, i don't understand your confusion as to the cost of this sort of thing from China, its a police state paying 3rd world wages and 3rd world working conditions for this type product, the products that have higher value, the workers get payed more and the working conditions are better

Originally Posted by twopintsplease

i don't thing they were made in a CNC , too slow ,i think they would be gang milled with the different dia, slitting saws in a stack, i don't understand your confusion as to the cost of this sort of thing from China, its a police state paying 3rd world wages and 3rd world working conditions for this type product, the products that have higher value, the workers get payed more and the working conditions are better

Now THERE'S a good idea, would never have even thought of that.

after reading my reply , i don't think i made it clear the parts (comb) been machined are stacked as well providing support for the thin individual parts, with ganged multi dia. slitting saws, hundreds of parts an hour from simple machines