Whats the gimmic to cutting a single piece tug boat visor? I'm trying to do this with manila envelopes so that I dont waste my Plastruct sheets. Cant seem to get it right. Help!! Thanks.

Is this a conical section, or an annoying elipse?

This is some cardboard mockups I created before cutting the deck rails for the Fire Boat.
I basically cut the rough shape, and then add 1/4"-1/8"- or 1/16th of an inch to top or bottoms till I get what I want. Usually takes two or three tries.

If it is a simple conical section, and you know the small and large diameter and the hieght of the cone, then you can use the "Shroud Calc"

http://www.realmcommunications.com/r...shroudcalc.htm

[8D]

2003merc,
I hate to be an idiot, but what's a 'visor'?
- 'Doc

Doc, I think it's more like a ball cap.

Okay, now I understands.
- 'Doc

Kinda like a duck bill only placed higher. >G>
Tug

thanks Umi. I've been following your fireboat build and its the first site that I turned to to try and git some ideas. I've been using the manila and have almost got where I need to be. I'll let you all know how it works out. Thanks.

i built a bow visor buy making a light weight wire frame from floral wire and the glueing 20 bond typing paper to the outside and then removed the paper clad wire frame from the bow, flattened it out and traced it on craft card,,,worked well

DO you have pictures? That would help greatly. Thanks, Reddog69

heres the basic idea for using a wire frame for getting the correct shape to cut out your visor,this method can be used for almost any conical shape,,,,,,