RG65 Bulb Pattern

This is a half pattern for an RG65 bulb used to make a two-part mould. It makes a bulb of around 625 g. To make a lighter or heavier bulb, scale the Y and Z axes to produce a bulb of smaller or larger diameter. I made two halves and used locating pins to accurately align them when making the plaster moulds. I didn't bother to smoothe them but worked on the lead bulb after casting.