Recent content by kuvaharrastaja

Yes, pretty much like that! I have not thought much about the stopping mechanism yet, but there needs to be one. Maybe something similar than dog box gearbox, like how the teeth mesh together. Maybe use just one teeth pair similarly ground than the gearbox. It can have even a slight negative...

Here is some progress thats been made: First picture, the ring part is embedded on its final place. Above the embedded ring part, there's another embedded feature, that is for the cover of the ring part. That will make the whole surface flat, for the leaves to glide against. The most outer...

Yeah! I will write to my next post what ive been thinking for the spring system. It would be super awesome to hit 1/60 without shaking the thing apart. Your shutter also maybe probably have lighter components relative to the size. I would have room to mount arduino and small battery to the...

Thats really cool! I wonder on what use requires 8" opening? Thats big! It looks to be moving very nicely and fast at the 1/10s. Hmm, i think the wollensak studio shutter has a bit similar system, 2 levers working opposite each other, with stronger and weaker springs, but it only has bulb mode...

Thanks! That's interesting thread and would be useful tool for other shutters too. I have kinda full hands on projects tho, so ill have to start with more basic ways of testing.

Yes, that is true, there is a lot of variables that can make difference of third of a stop. I think my shutter has pretty good chances to be consistent enough, since its pretty simple and electronic timing device is used. But I will not probably make it fully electronic. It would be nice to...

Thanks! That is the answers, on what i was wondering about and more. Have to take this in consideration when trying to figure shutter speed out. That will take some doing tho, to get that far with project :D . I have never thought shutter times as kind of an estimates/average of the exposure...

Hey, thanks for asking! Some progress has been made with the shutter. I have been thinking that it would be cool to make some kind of video updates too, or even build series of some kind. Especially when shutter is in testing, everyone would be able to see and hear how it moves and operates...

Yes :D I was wondering if anyone notices the drill. Its black & decker 1/2" general duty. Its fun to revive and use some old tools and especially when they can be had cheaply/ saved from scrap.

Attaching the casting to lathe with small threads and screws and starting the machining. Under the rough cast surface there is nice aluminium with no air pockets or porosity. Also the casting were not too small anywhere, so that worked out nicely. On the last photo the shutter opening and...

Project is still going, I managed to cast the shutter main body piece. This is very crude casting, but it saved me a ton of work not having to finish and polish the model piece at all. I left plenty material to be machined away, that should correct rough surfaces. There's some images on steps...

Okay, I did this kind of side project/ testing solenoid for shutter controll. Wollensak verito lens shutter is controlled electronically with a cable. Lens and shutter is unmodified of course. So nothing old is ruined. Minolta slr camera's flash sync is used as a clockwork for solenoid, and its...

Here is some progress, with the ring part I searched the center point, marked the leaf drive pin hole locations, every 72 degrees. Then 4mm holes were drilled, and the part could be attached to lathe from those holes (second pic). There inner surface is machined to be perfectly round, because it...

Thank you! Lol that cat comment :D It could look like some scifi space ship air lock door thingy. I try to get this ready and moving, but it remains to be seen if its possible to made go 1/30s and not shake the camera too much.

Hmm, i couldnt find any examples of Werra shutter with quick search. But maybe if the ring had a lobe for each leaf instead of slot, and each leaf would have some kind of return spring. Maybe then it could close without ring reversing.. hehe, just thinking how it could be done. Thank you!