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Forum: Pentax Camera and Field Accessories
12-30-2023, 03:04 PM
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Sure. I can upload it to Cults3D. Just a word of note for anyone who wants to print it themselves: don't do it unless you have access to a laser sintering machine that can sinter metal or high strength nylon. Filament extrusion and especially stereolithography printing would result in a structure that's too weak and could possibly fail. Plus it wouldn't have the rigidity necessary to keep the camera stable.
The best method would be to download the file and get it milled out of aluminum.
I'll also upload this publicly to my Shapeways account. Unfortunately Shapeways is expensive but if anyone wants this and doesn't want to go through the hassle of dealing with 3D programs and trying to get it printed or milled on their own, it's an option.
I also am looking at getting a K-1 maybe with a DBG-6 so I might take a look at the earlier suggestion of a bracket for that combo.
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Forum: Pentax Camera and Field Accessories
12-30-2023, 02:43 AM
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Never tried it. It was too expensive for me at the time.
I also later sold the camera so I never looked into this bracket very much more.
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Forum: Pentax Camera and Field Accessories
04-29-2018, 11:15 AM
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Got the bracket in yesterday and I'm pleased with how it came out. Now I just need to get it milled out of aluminum.    |
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Forum: Pentax Camera and Field Accessories
04-24-2018, 11:55 PM
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From all appearances, I've finished the design. I'm getting a prototype printed and if all goes well I'll fix up a G-code and get it milled from 2024 or 6061 aluminum. Or at least I'll try. I'll post some pictures when I get the printed pieces in.
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Forum: Pentax Camera and Field Accessories
04-18-2018, 08:03 AM
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They use 2 1" long #5-44 socket head screws.
4/18: Also now just added a safety stop screw hole in the bottom.
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Forum: Pentax Camera and Field Accessories
04-15-2018, 09:47 PM
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Well no dice on the scan but a new render of the bracket. Like I said, the bracket is now in two parts, the horizontal base and vertical L. Just need to get 2 #5-44 screws. First is another 3D printed prototype at some point. (The blue color is just to make the part visible.)
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Forum: Pentax Camera and Field Accessories
04-09-2018, 08:04 PM
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I actually will be getting the camera scanned (hopefully) tomorrow. If the resulting model is too coarse, well then I might be sunk. I did add in measured body-matched features a few days ago but I'm skeptical of them. When I get the camera scanned I can double check them and add/subtract as need be. I didn't think of using the manual so I just checked it and unfortunately there are no front facing vector diagrams in it.
I'm not going to be using the printed plastic bracket as the final product, I want to get it CNC'd out of 2024 or 6061 aluminum. I'm leaning more towards 2024 for its better corrosion resistance and better machining properties vs 6061. And that hole has sort-of been dropped. The bracket is now a two part assembly with the "L" and horizontal parts assembled with #5-44 screws.
I can see what can be done with the screw. Probably can remove the circle and make it just a straight bar.
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Forum: Pentax Camera and Field Accessories
04-01-2018, 11:31 PM
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Security screws can be done. Waiting on the scan before I do much else though. I have added some anti-twist features but, again, I needed to get the camera scanned to add more body-specific ones. About the strap, on the L-arm, there is a screw hole for mounting a screw-in strap lug. I can add something on the horizontal arm but I'll need to figure out what and how.
About the K-1 and grip bracket: it's much easier for me to design something like this when I have the physical reference in-hand. That way I'm able to measure off it. An accurate 3D model works just as well. If you're willing to send me a K-1 and grip, I can scan it and start modeling a bracket for it. :p Alternatively, if you can, you could scan the camera and grip and send me the files. That way I can model it to exactly fit but the camera and grip. But the first option is nice too. :p
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Forum: Pentax Camera and Field Accessories
03-31-2018, 09:17 PM
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I have already added some anti-twist features to the design but none very specific. I need to get the camera 3D scanned to add more.
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Forum: Pentax Camera and Field Accessories
03-29-2018, 11:44 PM
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Well I finally got the prototype and it looks good. Had to move the tripod mount screw hole because it was placed incorrectly but it's been fixed. Now I just need to finish adding some anti-twist fixtures.
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Forum: Pentax Camera and Field Accessories
03-22-2018, 06:16 PM
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I don't really want to ditch the cut outs because those would house rubber pads.
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Forum: Pentax Camera and Field Accessories
03-21-2018, 10:48 AM
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Yes, it's supposed to be Arca-Swiss. I say supposed to be because I haven't yet tried it with an Arca-Swiss compatible mount I have to see if it works. The threads on the bottom mount are just to keep the mounting screw in place. I plan on using a screw similar to what 3 Legged Thing and many other companies have done where they have a partially threaded 1/4"-20 screw, thread it through the bracket completely so the screw turns freely, and then screw it into the tripod mount on the camera. That way it doesn't matter which orientation the threads are and no extra equipment is needed to keep the screw from falling out. The shallow cut outs are meant to facilitate rubber pads. Unfortunately I might not be able to use them because I have no way of accurately cutting to shape thin, adhesive backed rubber pads. I could always just try imprinting the shape in the pads then cutting them out from a sheet.
---------- Post added 03-21-18 at 10:51 AM ----------
This render is looking at the bracket from the back (so it would be like we're looking at the flip screen of the K-70). The upright portion of the bracket is on the left side of the picture. It has a large cut out already for the microphone jack.
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Forum: Pentax Camera and Field Accessories
03-21-2018, 02:10 AM
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So I modeled up an L-Bracket for the K-70 and I'd like your thoughts on it. This is just a computer render but I ordered a 3D printed prototype already. So, any thoughts?
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