{"id":1204,"date":"2022-03-05T23:45:00","date_gmt":"2022-03-06T04:45:00","guid":{"rendered":"https:\/\/scope-eye.net\/?p=1204"},"modified":"2022-03-06T13:45:57","modified_gmt":"2022-03-06T18:45:57","slug":"flawed-methodology-compounded-errors-day-21","status":"publish","type":"post","link":"https:\/\/scope-eye.net\/?p=1204","title":{"rendered":"Flawed Methodology, Compounded Errors (day 21)"},"content":{"rendered":"<p>Last time around I identified an alignment problem with the spikes on the shoulder pauldron part. Prior to that discovery, while the part is still in rough shape, I felt I was on the right track to get it where it needed to be. However finding the alignment problem left me feeling I needed to back up a step or two to correct the problem. Unfortunately, to do so at this point is a little complicated.<br \/>\n<a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_minus_spike_1.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_minus_spike_1_thumb.jpeg\" title=\"After all that prior work, I tore out the front spike to try to realign it.\"><\/a> <a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_minus_spike_2.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_minus_spike_2_thumb.jpeg\" title=\"I pulled out the styrene sheet that I'd added to adjust the spacing relative to the templates, and discovered this uneven layer of epoxy putty in there...\"><\/a><br \/>\n<!--more--><br \/>\nThis whole situation basically left me with two options: Either pull the whole pauldron apart, rebuild the alignment guides, and reassemble the pauldron around better guides, or try to reset the front spike in-place on the part as it&#8217;s currently built up. The first option would almost be like starting over, but it would hopefully give me a better base for the work. On the other hand, the second option could be quite good enough and would possibly involve a lot less work. I opted for the second option, though I&#8217;m not sure I was right about it being the better choice.<br \/>\n<a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_still_misaligned_1.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_still_misaligned_1_thumb.jpeg\" title=\"My first attempt at re-seating the front spike (bottom view)\"><\/a> <a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_still_misaligned_2.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_still_misaligned_2_thumb.jpeg\" title=\"My first attempt at re-seating the front spike (side view)\"><\/a> <a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_still_misaligned_3.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_still_misaligned_3_thumb.jpeg\" title=\"A recheck after adjustment (bottom view)\"><\/a><br \/>\nFor this work I had removed part of the styrene spacer under the spike fringe to hopefully maintain roughly the same spacing but give me some flexibility regarding the angle. I checked the work mostly by using the grid on my phone&#8217;s camera aligned to the part&#8217;s centerline guide, which was a bit frustrating as it wouldn&#8217;t stay in focus, and when the image changed focus, it would shift a little as well. I also had difficulty keeping the spike fringe in place as I shifted it around and rechecked it, so ultimately I pulled the shim out and stuck some clay in to stick the part in place and give me a bit more freedom to move the spike fringe around. As I opened up the hole in the pauldron part wider and trimmed down the alignment guide to give myself more freedom to move the spike fringe around, this also meant that I had to realign not only the part&#8217;s orientation, but its position in 3 dimensions as well..  Which became a bit of a nightmare.<br \/>\n<a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_camera_grid_alignment.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_camera_grid_alignment_thumb.jpeg\" title=\"I used my phone's camera grid to align things relative to the centerline guide. It was a bit frustrating because the camera wouldn't maintain focus.\"><\/a> <a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_reseating_spike_again_1.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_reseating_spike_again_1_thumb.jpeg\" title=\"I carved out most of what had established the alignment of the front spike so far, in order to freely align it to match the rear spike instead\"><\/a><br \/>\nFrom there followed a whole bunch of iterations of moving the spike, checking the position and orientation relative to the rear spike, and repeating&#8230;  Over and over.<br \/>\n<a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_reseating_spike_again_2.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_reseating_spike_again_2_thumb.jpeg\" title=\"Top view alignment check. It's a bit hard to sight the centerline guide as a fair bit of it got smoothed over with putty. I cut some of the putty away so I could spot the guide again.\"><\/a> <a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_first_spike_reseating.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_first_spike_reseating_thumb.jpeg\" title=\"I thought maybe I had it good to go - this is about where I was trying to leave things at the end of Friday's work\"><\/a><br \/>\n<a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_reseating_spike_again_3.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_reseating_spike_again_3_thumb.jpeg\" title=\"Another alignment check, this one's looking a little better for the spike fringes, but not for the spikes themselves...  Which is a problem...\"><\/a> <a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_reseating_spike_again_4.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_reseating_spike_again_4_thumb.jpeg\" title=\"Side view check, also looking pretty good.\"><\/a><br \/>\nIt was at this point that I discovered another issue that had been fouling my attempts to get this thing properly aligned: The spikes aren&#8217;t quite straight. If I install one of the spikes, it&#8217;s not going to point straight out from the surface of the spike fringe. If I rotate the spike in place, it will have a little &#8220;wobble&#8221; &#8211; so all those times I&#8217;ve used the position of the spike tips to check alignment of a spike fringe, the fundamental approach there was basically unreliable. I may need to correct the spike part, or even remake it entirely in order to correct this error. For now I&#8217;ve decided to start aligning the spike fringes by checking their outer surface instead of their inner surface (aligning to the guides) or the effect on the spikes.<br \/>\n<a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_protractor_alignment.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_protractor_alignment_thumb.jpeg\" title=\"Using a protractor, in the same plane as the spike alignment guide, to match the angle of the front spike fringe to the rear one\"><\/a> <a href=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_overview.jpeg\"><img decoding=\"async\" src=\"\/model-data\/1_100_Zaku_Kai\/zakufz_20220305_pauldron_overview_thumb.jpeg\" title=\"The end result of this realignment work. Good enough at last?\"><\/a><br \/>\nIt&#8217;s been a real frustrating couple of days on the project. Most of my time so far on the 100 day challenge has been spent on this pauldron. The fact that it&#8217;s not done is itself frustrating. The fact that I&#8217;ve torn down the guides that were the basis of this rebuild of the pauldron to the point that I can&#8217;t use them any more is frustrating. The fact that the spike fringe parts and the spikes themselves are crooked enough that I can&#8217;t rely on them to align anything is frustrating. Maybe I&#8217;ve now got this thing looking good enough that I can smooth out the sculpt and use it? Go on to making other parts? I&#8217;m not sure.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Last time around I identified an alignment problem with the spikes on the shoulder pauldron part. Prior to that discovery, while the part is still in rough shape, I felt I was on the right track to get it where it needed to be. However finding the alignment problem left me feeling I needed to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[8,86,68,20],"_links":{"self":[{"href":"https:\/\/scope-eye.net\/index.php?rest_route=\/wp\/v2\/posts\/1204"}],"collection":[{"href":"https:\/\/scope-eye.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scope-eye.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scope-eye.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/scope-eye.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1204"}],"version-history":[{"count":3,"href":"https:\/\/scope-eye.net\/index.php?rest_route=\/wp\/v2\/posts\/1204\/revisions"}],"predecessor-version":[{"id":1207,"href":"https:\/\/scope-eye.net\/index.php?rest_route=\/wp\/v2\/posts\/1204\/revisions\/1207"}],"wp:attachment":[{"href":"https:\/\/scope-eye.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scope-eye.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scope-eye.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}