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Date: Sat, 18 Feb 2006 13:19:56 -0600
From: Jarrett & Heidi Johnson <hjjohnson@sasktel.net>
Subject: Cowl building
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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I mentioned this on Paul's list and thought I'd 
mirror post it here also. There has been some 
discussion in the past on cowl building and for 
those who hate doing it, here's a solution. :-)

I'm in the process of aquiring a large format 
Milling machine. It will be used solely to produce 
molds and buck's for composite work.  I should 
have it in and operational by early to mid summer 
if all goes well. It will have a very large 
footprint [measured in feet.. not inches] and the 
ability to machine anything up to MDF, including 
high density foam's.  If anyone is wanting a cowl 
to fit a specific airframe or style we should be 
able to machine you a buck for your cowl in a 
short time span and produce a finish from which 
you can directly pull either a female mold or a 
male formed cowl. We could also make the buck's 
for spinners which properly blend into the cowl 
for a better, more streamlined look. If you'd 
rather that we do all the composite work for you 
this also can be arranged. For those who want any 
kind of cowl scoop's  [ie; a P51 style, Rad 
diffuser's or whatever] this will also be easily 
accomplished.  It will also be very easy to build 
large format molds and buck's. Something like a 
complete Cosy upper/lower fuse machined from foam, 
would be easily accomplished. All components will 
be machined from 3D CAD model's, so if you can 
imagine it... we most likely will be able to build 
it for you.  Currently we are only planning a 3/4 
axis machine, however it is conceivable that we 
would add a 5 axis module to the system in the 
future, granted there is a need for it.  The CAD 
modeling could also be done to sketch's provided 
by customers or to their provided CAD models.

Hopefully this will be something that others can 
utilize to produce complex and time consuming 
item's.  I'll be posting more info as things 
progress and we become 'operational'.

All for now
Jarrett Johnson