Help me with Sketchup PLEASE !

[cropwell]

I think the problem was that the guidelines were not on the same plane. I redrew the thing and it seems OK now. I just have 16 hours of print time before I can see what it is like as a pattern for casting.

Cheers,

Rob

[Neale]

Rob - are you going to use the printed pattern direct from printer or finish it first? I could imagine that the pattern won't release too well from the mould if it is not smooth enough but finishing printed parts is a bit fiddly - machining a casting is easier in my book!.

[cropwell]

Rob - are you going to use the printed pattern direct from printer or finish it first? I could imagine that the pattern won't release too well from the mould if it is not smooth enough but finishing printed parts is a bit fiddly - machining a casting is easier in my book!.

It will get a bit of sanding, then a wash with Methyl Ethyl Ketone. The design has sloping sides to make it easier to mould in sand.

Have a look at http://www.stuartakroydglass.com/new...s/?galAlbum=44

Stuart and I are developing a version of this glass sculpture with a lighted base. Stu has had a prototype base machined in steel and was not happy with the look of it, so we are trying the cast bronze route.

If it turns out well the castings come out at £30 each, which is a more favourable price than the machined steel version and we think they will look much better.

Cheers,

Rob

[cropwell]

Another technique I am experimenting with is to make a solution of scrap ABS plastic in Methyl Ethyl Ketone (I call it 'Dip' after wtaching Who Killed Roger Rabbit) and use this to 'paint' the surface to flow out the printed surface, which is always textured from printing. This project is more Art than Engineering.

Rob