Is 1/4" tube as od (outside diameter)?

Yes, ¼" is the outside diameter.

Are the rollers smooth? Would soft metal, like brass, be marked by rollers?

Hi, thanks for your inquiry. The roller surface is knurled as the picture showing. Probably there will be pressing mark in soft metal.

Can you set it for a specific diameter and just roll it or is it just trial and error

The diameter of the bend you make is going to depend on the length of your stock. There is no diameter setting. Make your bends in quarter turn increments, roll and repeat. This machine is mainly for rings. If you’re trying to make decorative bends that can be achieved but not exactly what it’s for. Hope that helps.

Can it roll 1 inch copper tubing

I don't believe so, there is not a groove to ride in for 1" material, may flatten it

Pr 3 Manual Plate Steel Ring Roll Bender Easy Operation

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🔩 Bend it like a pro with KAKA's PR-3!

COMPACT DESIGN - Lightweight at 5.9 kg, making it easy to store and transport.
ROBUST CAPACITY - Handles up to 1/4" rod and 1"x1/8" flat bar stock with ease.
PRECISION CONTROL - Fine adjustment for the top roll ensures accuracy in every project.
VERSATILE MOUNTING - Can be bench or pedestal mounted to fit your workspace perfectly.
EFFORTLESS OPERATION - Experience the ease of bending with a long handle for force-saving action.

The KAKA INDUSTRIAL PR-3 Manual Plate Steel Ring Roll Bender is a compact and efficient tool designed for metalworking enthusiasts. With its single pinch design, manual hand crank, and adjustable bending diameter, this ring roller allows for precise and effortless operation. Weighing only 5.9 kg, it can be easily mounted on a bench or pedestal, making it a versatile addition to any workshop.

Specifications

Manufacturer	KAKA INDUSTRIAL
Part number	PR-3 Manual Ring Roller
Item Weight	5.9 Kilograms
Product Dimensions	36 x 20 x 21 cm; 5.9 kg
Item model number	PR-3
Size	Small
Color	gray
Material	Metal
Item Package Quantity	1
Batteries Included?	No
Batteries Required?	No

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