EB 617 MK II - Digital Plans

Changelog:

V1.0.0 - 27/11/24 - First Release all files

V1.0.1 - 31/12/24 - Addition of stand model and felt cutting jig

V1.0.2 - 03/01/25 - Update to front standard parts A16, A17, A18 - updated to provide additional rigidity and less flex with PLA prints

V1.0.3 - 19/01/25 - Update to rear standard parts A20-1, A20-2, A20-3 - updated to provide additional rigidity and less flex with PLA prints

V1.0.4 - 23/01/25 - Added number plates for multiple filmback identification - A36 - Filmback Number - 01, A36 - Filmback Number - 02

V1.0.5 - 27/01/25 - Added alternate design for Rear Standard Base. this piece combines A20 and A20 removing the rear standard movement of Shift however it provides singificant better rigidity, completely removing the need to print these parts in Carbon Fibre PLA. Thus by giving up Rear Shift you can get a perfectly rigid piece out of regular PLA.

V1.1.0 - 30/01/25 - This is quite a significant update. As with the vast majority of the previous updates, a lot of work has been put in to adjusting the design of the front and rear standard to allow printing in standard PLA instead of Aluminium or Carbon Fibre, but yet still offer full rigidity and no flex on the standards, especially when using wide lenses. With this update, the front and rear standard can now be printed in PLA with no issues with flexing. You will note the rear standard bracket is an all new design, which not only removes all flexing due to the only fixing point being the two thumbscrews, but it additionally makes the rear standard shift movement smoother and far more precise than ever. The rear standard has very high tolerances to remove any slop, as such I highly recomend you print with .08 layer heights, additionally the parts when first off the bed, may require 'burning in' sliding the two parts together back and forth several times until the action is smooth. This also necesitated a slight change to the Ground Glass Holder, as the glass has now been recessed a further 2mm to account for the removal of flex in the previous parts. Parts effected by this updated are A20-1 - Rear Standard Bracket, A21 - Rear Standard Base, A25 - Ground Glass Holder, A30 - Left Ground Glass Retainer, A31 - Right Ground Glass Retainer.

V1.1.1 - 06/2/25 - Small update to hole tolerences for M2 holes due to change in supplier hardware. Only needed if using hardware kit purchased after 01 Jan 225, Parts affected - A15 - Front Lensboard Mount, A20- 2 - Rear Standard Bracket, A20- 3 - Rear Standard Bracket, A22 - Rear Standard, A25 - Ground Glass Holder.

V1.1.2 - 20/02/25 - After many requests I have added the ability to make the bellows removable. With the addition of 24 Neodinium Magnets and two new frames that are glued into the bellows, you can now remove the bellows for transport, storage or to try out new bellows with ease. The frames mount in recesses in the existing from and rear standards thus ensuring a light tight seal, the magnets are incredibly strong so the chance of the bellows accidentally detaching is non existant. Parts Effected A22 - Rear Standard, A15 - Front Lensboard Mount, A47 Rear Bellows Bracket, A48 Front Bellows Bracket.

V1.1.3 10/03/25 - Added Front Standard Lockout Switch to files. Parts Effected A49 - Lockout Switch, A50 - Lockout Bracket

V1.1.3.1 12/03/25 - Due to a change in a suppliers part the part numbered A37 - Film Plate has had the holes for the rear red thumbscrews increased from 8.5mm to 9.5mm. This only effects people who have purchased the hardware kit in the last 2 months.

V1.1.4 25/03/25 - Several small parts changes and updates. A16 Front Standard has had its gussets increased and the width of the side brackest increased to aid in strength when printed out of PLA not CF. Added A51 Transport Cage and A52 Arca Plate to Misc parts. Added new Ground Glass Protector, part A53, this requires 4 x 8 x 2 Neodynium Magnets as well as printing updated Ground Glass Brackets Part A30 and A31.

V1.2.0 02/05/25 - BIG UPDATE - 4x5 Film Back - There is now an additional folder containing all the parts needed to print a 4 x 5 Film Back for use with the EB617. This back can be swapped out with the 617 Back in about 45 30 seconds, the bellows will also need to be swapped over to a 4x5 set of bellows and allow you to shoot standard 4 x 5 Film Holders.

V1.2.1 16/05/25 - Updated the front and rear bellows magnetic attachment bracket in the 4x5 Film Back to allow the use of the slightly smaller Toyo 4x5 style bellows, these are readily available online and cheaper than the larger 5x7 Toyo Bellows utilised in the original 617 camera project. Parts effected B13 and B17. Additionally have made a small modification to the rear standard to allow a new retention mechanism instead of the current two thumbscrews. with the additional of two retention catches (the same as the front standard) you can now lock the rear standard in place to only allow rise and fall, or unlock the catches to also allow Tilt. The existing retention thumbscrew holes are still in the design for those who prefer the older method. It requires 4 x m3 x 6 heatsets, 4 x m3 x 8 flathead screws, as well as printing off two additional A19 Retention catches. Parts effected A22, A20-2, A20-3.

V1.2.2 20/06/25 - Based on feedback that the front standard swing operation was cumbersome, have redesigned it by adding to front retention catches that slide up to allow swing function, when in their lowered state they restrict the front standard movement to shift only. This effects parts A16, A17 and requires two additonal parts A16-1 x2 as well as 2 x M3 x 6 Heatsets, 2 M3 x 6 FH, 2 M3 Red Washers. Additionally, have made a slight adjustment to the lens board retention catch, it was designed based on the lens boards I had access to, however it was apparent that some lens boards were not sealing correctly, the new design aleviates this as well as removes th need for the felt gaskets at the top of the Lens mount (these are still supplied in the hardware kit for those who wish to apply them still). Have also inluded the rear moveemnt retention catch to go with the front standard retention catch, this is generally not required, however it is available now as an option for those who want to add it, parts effected A44, A55. I have also adjusted the model for thr 120 spool, this was from a pre-existing model, but I found it was slightly oversized, it has now been updated.

V1.2.3 16/07/25 - Only a minor update, have slightly modified the front standard base plate so that it is now inset into the front standard rails, as well as allowing simpler alignment when gluing, this also makes the front standard slightly more rigid as well as adding a further 3mm to the amount of rise the lens can achieve as the whole fron tstandard is now 3mm lower. Parts affected A10, A11, A17.