To start off the chassis was removed from the fret and any pips filed flat.
Then it is a matter of opening out the holes to take the axle bushes. This can be done in a couple of ways. Using a broach or turning a round file anti-clockwise or if you prefer it the other way to the cutting edge. Both will achieve the objective of a sliding fitting bush with no slop. Care is the essence here as is patience- it can make or break a well aligned chassis!
The lower picture shows the bushes soldered into place- you can superglue them, it's not my way however. Then a quick clean up of the axle hole to make sure that the axle is a smooth sliding fit- I use a broach for this- you can use a rolled up piece of wet & dry paper. Next the chassis is folded up and when square a fillet of solder is run at the folds.A piece of 2mm silver steel bar shows that all is square and the axle holes in line. This chassis takes 2mm axles-not the more usual 1/8th inch Romfords or Society products. The reason for this is that the wheels have 2mm holes in them with plastic centres so a lot of care is needed.
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