AES":6ah9txap said:
@ linkshouse: "Will do." You wrote.
Thanks, you're what we always used to call "a scholar and a gent Sir"!
Ha ha! Thank you.
I now have a question if you don't mind. In your picture (beautiful pic BTW) your bird is apparently flying from the Top RH side of the "frame" down towards the Bottom LH. In my discussions with Claymore (Brian) of this parish about the aeroplane Intarsia I'm going to make (STILL not even started yet!), Brian said that the aeroplane should appear to be flying "out of the wall, towards the viewer" - i.e. the bits furthest away from the viewer should be thinner than those bits nearest to the viewer.
But looking at your finished cut outs, they all appear to be the same thickness. So are you going to SAND the backs off the bits that should be the thinnest (sounds like a LOT of work, and messy too!)? Or are you going to mount the finished pieces onto individual "wedge-shaped" backing pieces (before mounting the whole lot onto a 1 piece backer)? If the 2nd, that sounds like a LOT more careful cutting.
Sorry if I've got the wrong end of the stick, and TIA for your patience in answering.
AES
Brian is absolutely right (of course :roll: ).
Although it does depend on the pattern/subject. If the view is "square on" so to speak then of course this would not apply.
However in the case of your aeroplane and my eagle if definitely does.
So the top wing (in my project) is the furthest away and so needs to be thinner than the rest. Similarly the top foot is behind the bottom foot so also needs to be thinner.
Often on intarsia patterns you will see pieces marked as e.g. -1/4" and in this case the piece needs to be made of 1/4" thinner material than the rest or, be cut or sanded down accordingly.
You may also see pieces marked e.g. +1/4" and in these cases a 1/4" wooden shim is placed behind the piece/s. You were concerned that this might involve a carefully cutting a lot of addition pieces but usually one can use a single shim behind several pieces (I may end up doing this with the lower/front wing, eagles left wing actually, on my project). Also, as the shim will be underneath the intarsia pieces it doesn't need to be cut as accurately as the intarsia pieces. Indeed shims are usually made slightly smaller than the pieces they are supporting to avoid interference with adjacent pieces.
As for sanding a taper on the back of pieces. This would be wrong as it would result in the sides of the pieces slanting as well and then they would not longer fit together.
Reducing the pieces from the back (which I do on the disc sander part of my belt/dic sander) should always be done square to the piece. If the piece needs to have a sloping face then this should be done on the front face.
You mention that all my pieces are the same thickness, but if you look carefully you will see that there are all sorts of thicknesses

This is just me not thinking ahead. One usual only has one thickness of material to hand, but in my case I cut and thicknessed the bulk of the material from 10" square stock so should have thought of this and saved myself a lot of work at the shaping stage :roll:
Regards
Phill