Pattern making

[V8ian]

As I cant a realy suitable place to post this its gone on here,

 

Heres a question for the techies out there,

 

As My wife gave the kids my pattern makers rule to play with, its long gone missing,-----------

 

 

What is the precentage contraction ratio per linear foot of cast alluminium?????

 

[Rick]

 

reminds me of my a level physics exam

[V8ian]

If anyone wants to know the answer,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

it is--------------------------------------------------------------------------------------1.6% when cooling from 650 degrees,

you lot are all a lot wiser now

[alladdin]

i bet you have a stretch armstrong as well ?

[V8ian]

i bet you have a stretch armstrong as well ?

 

 

 

Yep,one in the loft,