KDS-POTO2 how to 大公開

first of all, I keep drawing lots of drafts wether or not i can actually make it
just do the design and technical problem will be solved (if lucky enough)

1. DESIGN
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initial design 1 - as I've did KDS-POTO1 before, I sort of understand the basic design of it,
but when i am designing KDS-POTO2, i have a sense of... wait, i can do a changable back...
so on this draft I started to draw a front shell with knobs + adaptor and back is the core but separtate thing


initial design 2 - a more refined drawing


135 back's design


120's back design


anti roll back gearwork - stop film from loosing or rolling back


lens adaptor - so that pinhole lens / waiwai lens can be utilized


shell locker - to hold the back in place after loading film


2.Testing
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as I've stick up KDS-POTO1 before, for the shutter plate, film distance from the lens are understood alread - so no more testing of focusing problem by semi-transparaent paper...

instead I've did some testing on gearwork with spring


and put it practically,



3.AI file design
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this is a long long part to do up the design in an AI file
have to consider the thickness, have to be very precise on any part
and as I am using a "sanded 磨沙" acrylic board... orientation of the design matters !
(else some shiny faces will have to show up on the outer shell - shich looks really bad if so !!!)

here's the laser-cut acrylic board with my AI file



4.Sticking it up !
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to stick up acrylic board, 化膠水 is to be used


and it will crystallize


many other tools


a. the film frame counter module

the basic framework which film can pass through


with the 8-legged gear - it rotate once = 8 holes passes = 1 frame of film passes !
thx my friend "iamwen" to enlighten me on this gear XD


with the top part stuck (there's a triangle mark there for you to see if 1 rotation has been made)

b. the anti-roll-back gearwork

spring with the leg


the gearwork take-up spool


when they combined - (just work as the video above)

c. the shell

shell with lens adaptor


behind it there's a holga shutter plate

d. waiwai lens

remove the lens module from waiwai - including the lens holder


cut up the edges


put it with the adpative rings - with the hood stuck to it, it will be done

e. pinhole "lens"

get a piece of plastic


sand it till the center part is very thin


pin a hole for it


stick it to the lens ~ done !!!


5.Putting everything together
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put a film roll for testing


here's KDS-POTO2 with waiwai lens :D