UK Monster Owners Club Forum - View Single Post

crust · 23-01-2021, 01:49 PM

You'll be needing one of these then.

https://www.artisanfoundry.co.uk/pro...roducts_id=206

One of my mates has a showmans steam engine, getting parts made usually involves a lot of discussions about shrink rates and how its not always as simple as adding a percentage.

We have the same issues with plastic part design and mould tools.

The material does not shrink universally in the same direction, so in the case of the fins on the exhaust flange it will shrink to the center of the fin causing sinks around the internal face.

23-01-2021, 01:49 PM	#64
crust rattles when he walks Join Date: Aug 2002 Location: in the comfy chair,moved furniture around Bike: M900 Posts: 1,065	You'll be needing one of these then. https://www.artisanfoundry.co.uk/pro...roducts_id=206 One of my mates has a showmans steam engine, getting parts made usually involves a lot of discussions about shrink rates and how its not always as simple as adding a percentage. We have the same issues with plastic part design and mould tools. The material does not shrink universally in the same direction, so in the case of the fins on the exhaust flange it will shrink to the center of the fin causing sinks around the internal face.