Kayak and Canoe Design Bulletin Board

Re: Drawing Fullsize - missing text

Posted By: Dave Miller
Date: Wednesday, 14 January 2004, at 8:14 a.m.

In Response To: Re: Drawing Fullsized Plans (Dave Miller)

: Here's another idea I've been using.

: I've been photographing A4 prints (with a 90mm portrait lens on 35mm camera)
: and using a slide projector onto ply with distortion

The end of the message has been lost. It should also say:

"with distortion less than 2mm over 8ft.

It is important that camera and projector are both square to, and accurately centred on original print and ply to minimise distortion.

On your original drawing add reference marks so you can check for distortion when projected. I use a rectangle (scaled to 3ft10in x 7ft10in) on my drawing, so I can check image size and distortion. The rectangle makes panel layout easier on the PC, and fits within the the boundary of the ply sheet so you can measure it.

So far I've had significantly better accuracy than offsets and battens."

Dave

Messages In This Thread

Drawing Fullsized Plans
Nick Schade -- Sunday, 31 January 1999, at 12:14 p.m.

Re: Drawing Fullsized Plans
Simo-Pekka Reponen -- Wednesday, 24 March 1999, at 9:35 a.m.

Re: Drawing Fullsized Plans
Dave Miller -- Tuesday, 13 January 2004, at 5:47 a.m.

Re: Drawing Fullsize - missing text
Dave Miller -- Wednesday, 14 January 2004, at 8:14 a.m.

Re: Drawing Fullsize - missing text
mike allen -- Wednesday, 14 January 2004, at 12:26 p.m.

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