Some more fwd deck work done today.
To my utter dismay I discovered that the 3mm wooden strips I ordered for the deck planking show a deviation in width of close to 12%. Minimum width I measured was 2,9mm, the maximum width 3,25mm. Since I was randomly selecting from the strips, this became an issue with the deck planking...
Now I have to be honest; my hull is not perfectly symmetrical, but while I was planking the deck I encountered some funny things. At one point I noticed I had to apply a little a little force to get the planks to sit properly against their neighbors. I found that rather strange, especially since at one point along the planking the phenomenon disappeared. But hey, one doesn't look a gift horse in the mouth, so I merrily continued. Today I was working on completing the planking of the fwd deck on the starboard side and that's when I noticed some slight differences in the the location of apertures for deck equipment and such in the planks, relative to the edges of the planks.
Once I started looking op into that I found that a) the hull is not perfectly symmetrical; not all provisions for the deck equipment and hatches are perfectly centered, not by much, but still and b) the differences in the width of the wooden strips, -0,1mm and +0,25mm . The deviations, in absolute value, are not large, but since they do accumulate, they became became a royal pain...
When thinking about desirable tolerances on one's build, I'm inclined to state that, depending on scale, say in the 1:48 to 1:86 range, a tolerance of +/-0,2mm would be preferable. That is an accuracy almost impossible to achieve by using handtools only. Maybe not for the extremely gifted among us, but I think, generally speaking, I can't build comfortably within a tolerance less than +/-0,5mm, on a good day.
A long time ago, while attending tech school, we were expected to file to this tolerance of plus/minus 0,2mm, plus rectangular, plus planar. I remember that as soon as the teachers left the workshop, there was a run on the machining equipment for a little tweaking. Trying to manually get within that tolerance range was a nightmare...