Machining Techniques

Fabrication techniques are becoming more and more sophisticated as technology increases the available options. Traditional hand tools have been ergonomically redesigned to provide superior tooling while reducing fatigue.

New types of hand held saws cut metal plate like plywood and digitally controlled lathes and milling machines produce dimensionally exacting components.

Waterjet cutting is one of the most useful tools at Robinson Iron. Fairly complex shapes may be cut out of metal plate complete with clearances for mechanical fasteners. The precision with which the machine cuts the material often eliminates further dressing of edges with conventional tools. A tiny stream of water mixed with powdered commercial grade garnet under extreme pressure enables the cutting of materials to a maximum of four to five inches thick.

Multi-axis routers are able to sculpt and engrave directly into finished metal. This technique is an additional tool for the designer. Details too fine to cast properly in a sand mold can be added to a casting in this manner.

Time saver machines are used to give an overall even finish to stainless steel, aluminum or bronze plate. Most often a No.4 Directional Brushed Satin Finish is required. Highly polished surfaces require the use of cloth wheels and rouge compounds to give the desired effect.

Detachable air driven tools allow for quick changes.

The multi-axis router can engrave very fine detail into uneven surfaces.

Engraved bronze with dark statuary bronze patina.

Interchangeable abrasive pads enable the grinder to smooth imperfections in the metal’s surface.

Small right angle grinders get into hard to reach areas.

Large flat plate surfaces may be resurfaced with a TimeSaver.

Waterjet cutting can produce components with sharp, complex detail - often eliminating the need for additional machining.