Mayner Posted November 20, 2012 Share Posted November 20, 2012 I though a simple blow by blow on working with etched kits might help to dispel some of the myths of whats involved and even encourage people to have a go. I am starting with the test build of one of my many "works in progress" a MGWR van. All ready to kit, tools and light refreshment on workbench. Very much like the old Superquick building kits except in metal The main tools at this stage are a piece of hardboard or self healing mat and a craft knife for cutting away the tabs that attach the parts to the sprue. A square and vice to act as a press brake for bending, a London Road Models Riveting Tool (thing with cork on the end), miniature drills and a pin vice, the white slab is a heat resistant ceramic pad for soldering. Sorry about the quailty of the photo, the sides are designed to fold up around the floor and the W & V Irons fold down to form parts of the running and brake gear. The chassis can be assembled with a rigid or compensated chassis where on axle is supported on a separate rocking W Iron unit The photos is from the back showing the half etched holes for forming bolt or rivet heads. One of the limitations of the process is that normally its only possible to etch half way through the metal so sometimes detail has to be built up in layers. The rivet tool in use place the punch in one of the half etched holes and drop the little weight which acts as a hammer, alternatively the pionted end of a scriber or centre punch can be used. Section of one side and floor showing punched bolt heads. Its usually necessary to drill or ream out holes as its difficult to etch out a hole to a specific diameter due to certain chaaracteristics of the process. Drilling out one of the underframe compensation brackets with a 0.75mm drill in a pin vice. Drilling and punching complete we now get to the metal bending phase of the project. The sides are designed to fold up around the floor, the side is bent up with one hand while holding the floor down against the mat using a block of wood or the square, then checking Repeat for the other side. 2 1 Quote Link to comment Share on other sites More sharing options...
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