undefined | Better HN

0 pointsiancmceachern1y ago0 comments

But you have to shell out $10k for a commercial ultrasonic welder from Branson, etc. Just the horn they show in the paper probably cost $6k to make.

I wouldn't be too dismissive.

0 comments

bongodongobob1y ago

They make ultrasonic jewelry cleaners for $75 that should work just fine. You're referencing something that is intended to be used with hundreds of gallons of water.

iancmceachernOP1y ago

I'm just talking about the paper. If they had referenced what you mention I would have referenced that

daniel_reetz1y ago

Also it will be punishing for pets and MEMs microphones.

triceratops1y ago

It's a prototype.

fallat1y ago

What? I went on Aliexpress and found a 40KHz transducer for $40. You can 3D print the attachment, can't you?

iancmceachernOP1y ago

A woofer from AliExpress is not a speaker with amp you can use for University level audio work.

I expect they used something like these:

https://www.emerson.com/en-us/automation/branson

You cannot 3d print anything in the ultrasonic chain, they need to be machined from specific metal, that's why the horns cost so much.

fallat1y ago

I looked up "transducer" and it seems to be what you'd need. But! You seem to have found where I was wrong: the horn. The horn seems to be the actual expensive part here. They could start a business I guess selling these en-masse. If anyone has any ideas how a maker could create this within reason please reply.

1 more reply

parineum1y ago

> A woofer from AliExpress is not a speaker with amp you can use for University level audio work.

We're talking about coffee here...

1 more reply

j / k navigate · click thread line to collapse

0 comments

bongodongobob1y ago

They make ultrasonic jewelry cleaners for $75 that should work just fine. You're referencing something that is intended to be used with hundreds of gallons of water.

iancmceachernOP1y ago

I'm just talking about the paper. If they had referenced what you mention I would have referenced that

daniel_reetz1y ago

Also it will be punishing for pets and MEMs microphones.

triceratops1y ago

It's a prototype.

fallat1y ago

What? I went on Aliexpress and found a 40KHz transducer for $40. You can 3D print the attachment, can't you?

iancmceachernOP1y ago

A woofer from AliExpress is not a speaker with amp you can use for University level audio work.

I expect they used something like these:

https://www.emerson.com/en-us/automation/branson

You cannot 3d print anything in the ultrasonic chain, they need to be machined from specific metal, that's why the horns cost so much.

fallat1y ago

1 more reply

parineum1y ago

> A woofer from AliExpress is not a speaker with amp you can use for University level audio work.

We're talking about coffee here...

1 more reply

j / k navigate · click thread line to collapse