Firstly, it seems that I have somehow lost my list of blogs that I like. It will take me a while to re-make it as I don't have all the web links as favourites!!!!!
Secondly, I have been a bit busy with some 3D prints the latest being a HO C32 funnel and steam dome primarily to fit the Ixion C32.
A number of modellers have commented about the Ixion funnel being made from three pieces with the joins showing badly. The bottom flared section is plastic, the middle is turned metal and the top is plastic again. I believe that it is also considered to be too tall.
While I was drawing I decided to do the steam dome as well.
While the flange on the base of the funnel and steam dome is very thin on the prototypes the outer edge of the flange on both the 3D printed funnel and dome is 1.18 inches thick on the model parts (1/3 mm). This is just above the minimum allowed design thickness of the Frosted Ultra Detail and Frosted Extreme Detail acrylic material. To keep the correct overall profile this is one of the compromises necessary when modelling.
One slight advantage of the funnel is that it is light so the loss of the metal part of the Ixion funnel is an advantage as the Ixion C32 is nose heavy which causes issues with traction. There is a metal weight in the boiler that projects well beyond the front driving wheel axle and this weight is not balanced by weight at the rear of the locomotive. Only a small thing but everything counts.
I have made them available on my Shapeways Signals Branch Shop either individually or together at:
Here are some computer renders and the plans I worked from:
I have been asked about doing a funnel for the Eureka Models D50 Class and I have got hold of the plans. The steam dome is the same but the funnel is 2 inches shorter than the C32 funnel. This request is based on the AMRM review in which it is stated that the funnel was/looked too high. I shall have to measure my D50 funnel.
More about what I have been up to with the 3D printing soon.