On Fri, 16 Nov 2018 10:49:52 +1300, Eric Stevens
wrote:

On Fri, 16 Nov 2018 08:06:34 +1100, Peter Jason wrote:

On Thu, 15 Nov 2018 14:19:27 -0500, Paul
wrote:

Wolf K wrote:
On 2018-11-15 05:50, Paul wrote:
Eric Stevens wrote:
On Thu, 15 Nov 2018 14:46:49 +1100, Peter Jason wrote:

https://en.wikipedia.org/wiki/Pantograph
I have to engineer a wooden step to adapt
differing heights in two floors. This has to fit
within the cut walls and meet up with skirting
boards etc. Is there an app to trace around
the relevant edges and so make a pattern on a
piece of timber for subsequent fret-sawing? It would be like a
mouse, I suppose.

THis is the kind of thing that boatbuilders have been doing for
millenia. Its not essentially a computer problem.

You can laser scan things if you really need
dimensions. But it's kinda overkill.

Paul

A piece of boxboard and a pencil also works. Cut an oversize piece,
trace, then cut near the traced line, try again, and cut again. May have
to do that several times, but it will improve your manual dexterity, bonus!

:-)

Best,


I hope we get to see a picture of this project when it's finished.

I want to see what this set of stairs is "bridging".

Paul

https://postimg.cc/R6mtHjht
It's not a pretty sight. After engineering a door
in the brick wall to make the top floor
contiguous, after straining my back and congesting
my lungs, after cleaning up the flour-fine brick
dust and arranging removal of all copious debris,
I'm assailed with the problem of making a single
(broad) step (of pine) down to the back of the
house. I have made the step but have to saw it
into shape. Perhaps multi-photos merged into
PShop (panorama) might do it?

Now I have seen the photograph: I think you should Google 'spiling
board'. No, that is not a spelling error. The word is 'spiling'.

Thanks, I checked out "spiling" and this seems
most applicable to clinker boats. The point of
making a virtual ''cast'' of the job and then
thansferring this to the new stock might be the
same in my case that is to cut a profile in
cardboard in one part, then another, and then yet
another and then merging these parts on to the
final timber for subsequent fret-sawing.