Ontopic The 3D printing thread

[gee]

Yup. I upload most things I create, figuring someone might find a use for it.

 

[gee]

Aluminum frame conversion complete.

Except the damn printer ate its X belt last night, because the X linear bearings are fucked. I've got Igus polymers on the way to replace the X/Y bearings.

 

[Mr. Argumentor]

Lab got new printers. Build plate is smaller than I'd want, but the quality is promising from what I've seen/heard.

 

[gee]

What are they?

 

[Mr. Argumentor]

Flashforge, I think Creator somethings

 

[gee]

Flashforge Finder.

Seems like a pretty basic machine, easy to use, probably a pretty decent educational machine, and $500 USD ain't bad for what it is.

 

[Mr. Argumentor]

Nope. Finder? Here's a q-code. I guess people still use those.

 

[gee]

http://www.flashforge.com/product/finder-3d-printer/

 

[Duke]

'Be careful with the hot nozzle'

That's gonna be the new fav nerd t-shirt. Mark that down.

 

[adi]

Can one make an LP player that works without batteries or power, like a spring winding watch.

 

[gee]

Hand crank record players existed ages ago. Not all that loud, and they probably beat up your records because of the force on the needle.

 

[Domon]

My dad has a hand crank phonograph with passive amplification (big horn). That thing can get loud enough to be painful. Baffles + horn is a very powerful amplification tool

 

[adi]

Can't the wound up power power a small speaker?

 

[adi]

Hand crank record players existed ages ago. Not all that loud, and they probably beat up your records because of the force on the needle.

The records were different too, way heavy..

 

[Mr. Argumentor]

Can't the wound up power power a small speaker?

Doubtful. You'd need a LOT of stored energy for an electric speaker.
Maybe with a custom design, but I don't know how you'd modulate the sound wave

 

[adi]

Doubtful. You'd need a LOT of stored energy for an electric speaker.
Maybe with a custom design, but I don't know how you'd modulate the sound wave

Ya i thought so too, speakers be power hungry, maybe an added solar source and really efficient tiny drivers

 

[gee]

Doubtful. You'd need a LOT of stored energy for an electric speaker.
Maybe with a custom design, but I don't know how you'd modulate the sound wave

Should be possible. Class D amps these days are pretty efficient, preamp won't require much power, spinning the record doesn't require much mechanical energy. You could make a pretty efficient speaker design, keep it mono, and don't try to amplify too much bass.

Making all that run off a hand-cranked generator should be feasible. Definitely off a solar panel (hell, my "green bastard" is pretty fucking loud, and runs 24/7 off a 10 watt solar panel)

 

[Jehannum]

Should be possible. Class D amps these days are pretty efficient, preamp won't require much power, spinning the record doesn't require much mechanical energy. You could make a pretty efficient speaker design, keep it mono, and don't try to amplify too much bass.

Making all that run off a hand-cranked generator should be feasible. Definitely off a solar panel (hell, my "green bastard" is pretty fucking loud, and runs 24/7 off a 10 watt solar panel)

Did you ever paint "GB" on the outside of that thing (y'know, for authenticity's sake)?

 

[gee]

Damn right. Still need a couple more coats of clear urethane to complete the finish, and to print and attach the corner bumpers.

 

[Mr. Argumentor]

Now I'm wondering how you actually would modulate a soundwave using only mechanical systems.

You'd need a much stronger needle and record I believe.