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This is the build of a Studio Scale Models Kit of Merlin, building it to Gauge OO and not decided on suspension type yet!! Main chassis components & coupling rods removed from the fret, edge cusp removed and ready all for soldering. Soldering the frame spacers to alternate frames, the ash pan sides and the coupling rods. The frames are then bolted together with screws supplied in the kit and then all soldered. Note;- **** The Motion Plate frame spacer, Part No. 108 - is in upside down in this sequence of photos. I will show it in the correct orientation in later photos when the error is fixed***** Captive screws and nuts are also fixed into the frame spaces to hold the front bogie and body onto the chassis. Crosshead parts ready for soldering, the long bits are a jig when soldering the parts together with a bit leftover as the sliders! see below. Jigged up and parts being soldered in. Soldering complete. Then the jig ends are cut off to complete the crossheads, a pit of filing and clean up is required. Motion brackets, cylinder wrappers and ends removed from the fret, cusps removed and ready for soldering. Motion brackets jigged up on a piece of MDF for soldering. Bracket folded n soldered. Preparing the relief valves for the cylinder front covers- these small bit of wire have a tendency to float out while soldering the covers on so I put a burr on one end with a hammer, thread the wire through the hole from the inside and solder on the inside, this stops the wire popping out later. Embossing the bolts on the covers. Inner cylinder wrapper bent to shape around a 6mm brass bar and ready to be soldered. Solder applied to inside of the wrapper, then the top is soldered onto the bracket first, then the wrapper is forced around the bracket, held with a strip of wood to save the fingers and the bottom soldered. Soldered. Front cylinder ends soldered on. Bogie front splashers were bent up and soldered to the chassis, gusset plates also done at front and at the firebox. Crosshead slide bars being folded up and soldered. Installing the slide bars into the back of cylinders and the motion bracket. A bit of fettling was required to the crossheads to ensure they could move freely in the slide bars, this was done before soldering the bars in! Outer cylinder wrappers bent up and ready to be soldered as per the inner wrapper method. Wrappers on and whole assembly cleaned up. Eoin.