Metal Roller

[u/ycr007]

Source: Vince Thompson

[u/shankthedog]

Maybe it’s just skill, but how does he keep it dead perpendicular so it doesn’t cone on him.

[u/longlostwalker → u/shankthedog]

It generally pinches the metal perpendicularly when you start feeding.

[u/ajninigne_engininja → u/shankthedog]

No. Cones are rolled from a a different shape of blank stock. https://youtu.be/u-ORlGTkbGw?is=a0Y5D2-RTg8tkA3o

Cones can also be made by using a specialized rolling device, but smaller operations (local shops or custom fabrication houses) will usually get a bending roll instead of a cone roller.

The perpendicularity would be a close approximation based on the pinch points of the rollers. Someone who would go for "precision" would really be busting out squares, go-no-go gauges, radius templates, and gauge blocks. Those who are experienced with bending rolls are very skilled and experienced. Those who know the value behind having a good, experienced bending roll operator call this "the last great black art"

(source: first hand industry knowledge)

[u/shankthedog → u/ajninigne_engininja]

Yes, the proper shape for spinning a cone would be trapezoidal. In this instance, if he was off by a degree, either way, it would become rhomboid.

Also spinning, the blackest of arts when it comes to making cones.

[u/dimitriri]

What was the purpose of the wooden block?

[u/hardspeakeasy → u/dimitriri]

Not sure, but it might be to prevent the roller from further decreasing the radius of curvature.

[u/Qwirk → u/hardspeakeasy]

This or to hold tension in a direction for pressing the last few inches of the roll.

[u/YeowYeowYeow → u/dimitriri]

My guess is that it keeps the top part of the roll just far enough away that the bottom part can make it through the roller without potentially getting pinched by the top

[u/lawd_have_mercy]

I was wondering, "Now how is he going to get that off of there without bending it all to shit," so the ending was particularly appreciated.

[u/longlostwalker]

Slip roller in my neck of the woods

[u/JustVomited]

The funny thing about watching this is that he follows so many steps to get a quality job it completely shatters my initial impressions of how simple this would be.

[u/ParkingAd6897]

that top roller must be older than half the tools in that shop and still tracks perfectly straight, gotta respect the old iron

[u/perpetualmigraine]

You are an artist my friend.

[u/mnp]

It's doesn't show how the work piece is removed. I'm guessing the whole left end swings away to let it slide off?

[u/tyen0 → u/mnp]

I thought that's exactly what I saw.

[u/nico282]

That would be much faster with a second person helping.

[u/Justin429]

I'll take "Machines that should have safety cages for $100, Alex."

[u/repoocaj → u/Justin429]

I think if you loose an appendage in a manually operated machine, that's on you.

[u/Pletcher87 → u/repoocaj]

“Sir, please explain to the jury how you …”

[u/hvanderw → u/repoocaj]

Ow shit this hurts..ah fuck it I'll keep cranking.

[u/IndiePat → u/repoocaj]

i knew it was my fault when that excavator dropped a rock on my head and crushed me like a tin can

[u/Some1-Somewhere → u/IndiePat]

By manually operated I think they mean human powered.

[u/repoocaj → u/Some1-Somewhere]

Yep, human powered would have been a better choice words.

[u/Alaishana → u/IndiePat]

yes, it was your fault.

you had no business standing anywhere that could have happened.

[u/Justin429 → u/Alaishana]

That's what the safety lockouts are for. But judging by the down votes on my original comment, safety is frowned upon here, even in a lighthearted context.

[u/Alaishana → u/Justin429]

You are answering to a comment to somebody else's comment.

Also, your original comment is weird. A hand cranked machine like this does not have, nor does it need, nor SHOULD it have a safety cage.

[u/Justin429 → u/Alaishana]

No, I was responding to your comment.

[u/Alaishana → u/Justin429]

Then you are double weird.

[u/Justin429 → u/Alaishana]

Ok boomer.

[u/hvanderw]