Meta lMaster Jr.

This is the original metalmaster multi tool. It was originaly designed in the 1950's by David Urwick. It was produced as a set of drawings and castings in the 1970's. There were also a set of articles about the system in Model Engineer magazine about the same time I became interested in the system after I saw a pictue on the web about 2 years ago. I started a e-group about the system, and so far have one member who has the system below, and another with a set of castings he is working on. I decided to build a slightly smaller version I am calling the MMjr.

This has a been a project that has been slowed by the related projects that have grown out of the original goal. In order to build the MMjr. I needed the capability of making larger castings, so a larger furnace. The first one I tried was a tilt furnace, it has worked quite well but positoning and flasks for proper operation is a difficult proposition. I am now in the process of building a larger crucible furnace, and will use the tilter for melting scrap. Next I was a little dissapointed in the quality I was getting with green sand so decided to try Petrobond. This required the building of a muller to properly mix the oil bonded sand( will have to make a section on the web page for that one day).
With some of the castings finished I required some special tooling to cut the internal key slot in the casting, this led to the Hand Shaper project,

Well here are some of the pictures of the project so far and a short video of me pouring the base casting using the tilt furnace.

For more information on the original Metalmaster check the yahoo group I started for it. We have a set of pictures of the castings, a copy of the original drawings, and a partaly completed cad version of these drawings.

http://groups.yahoo.com/group/Urwick_MetalMaster/

Much more to come !