By the way, some Dalek blueprints can be found here.
BRITISH BROADCASTING CORPORATION
LONDON W12 7RJ
Thank you for your letter.
I have pleasure in enclosing the blueprints for constructing a Dalek. These plans were first released in 1973 therefore any costs are now out of date.
These plans are released in good faith and on the understanding that the constructed Dalek will be used only for personal uses. It must not be put to commercial use as the Copyright remains vested with the BBC and Terry Nation,
Best of luck!
(Signed, 'Carmel Maguire')
Doctor Who Production Office
PS: Unfortunately we are unable to assist with regard to names of suppliers for any items mentioned in the plans.