Model Railway Forum

Brian wrote: ↑Sun Nov 10, 2024 6:31 pm Nah Its Frequence Division Multiplex to those in the railway industry.

There's always one.

Stese wrote: ↑Sun Nov 10, 2024 6:45 pm

Too Tall wrote: ↑Sun Nov 10, 2024 10:20 am this'll be interesting, I am guessing you will lay it down for FDM and put up with the layer lines ?
I also have an FDM, for about 18 months now, so still learning the ways, (more so the cad drawing part where I use a very basic online program I can "nearly" get my head around) but have managed to make some useful to me things.
I fully expect its going to get a good workout once I get my layout properly underway... but telephone poles are a long way off

I can attempt it laying down, at a shallow angle, or even straight up... I think at a shallow angle will work best.

I've got a 0.4 and a 0.2 nozzle to try it with as well.

Similar choices with resin. I found that right way up but inclined slightly to the rear (as viewed on screen). Once in the printer, up becomes down, but it needs fewer supports and the joints between support and model are on the underside.

Welll... That didn't go so well..

I broke the pole pulling it off the bed, and the supports were far too secure on the model. I also had a lot of stringing... (not an issue with Resin printers)

All of the detail was seemingly present, but I need to do some serious tuning on my printer before I try that again!

The model itself seems fine for FDM, just not on my printer, currently!

I sympathise having spent the last three months fighting mine. I think I've got it now. Just wish I could automate the painting.

I lost count.

I nearly ran out of doubles - put them on the old Shaddeholme layout as well.

I have to say they look great. Just like the real thing and their spacing looks good too. Well done

Just for info... Some insulator pots on railway poles were Black and others were Red. The red ones denoted live wires often 110 volts or higher and normally on one arm at the outer most pot places, so the S&T linesman knew which ones not to touch! The Black compound material ones were usually found on termination poles where they had a screw on cap, though white porcelain ones were also used and from here a thinner wire runs down the pole in often twin figure of 8 wire, called ironically a Dropper!

I recall being a trainee and up a pole installing new wires and the pole gangs supervisor told me to adjust the tension in the wires with a clamp on rachet that was tied to the arm and then clamped to the wire so as it pulled the wire tighter or let it out before it was taped with wrapping wire to the pot. He said "Use the Ping Pong method to get it right" Ping pong? Yes, you flick the wire and it sends out a Ping and returns as a Pong! You time the overall period compared to an already adjusted wire and let out or pull in the wire with the rachet until its was the same as the others resulting in a near as practicable equal bow (sag) in all the wires between the two poles. Very scientific!

Now I'll have to get the paint out again.

And your ping pong equipment.
Brian I seem to recall a similar way of tensioning telephone wires.

I've added the colours but not the ping pong.