SLA and FDM methods are probably both suitable for the door stop. I looked but
could not find any reference to the material or process used by the LAA on the
parts they are selling. I think that is a serious omission for an engineering
deliverable.
Maybe somebody (Clive) can find out?
The choice of material is important. Whilst doing work for a large aerospace
company
based near Cambridge we found that they had specified a 3D printing process
for parts that were subjected to human waste liquids and subsequent cleaning
with bleach based products. For cost reasons the 3D parts were left bare
(no paint), a situation that could have led to the production of gases banned
under the Chemical Weapons Convention.
Having specified and used 3D printed parts over the past 23 years, l can
recommend
that a surface finish is used on them. That could be primer and paint or
a thin GF or carbon ply (great for preventing surface cracks in FDM prints).
--------
John Wighton
Europa XS trigear G-IPOD
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