Extension to allow fitting a 40x80mm capacitor with the original battery pack into flashguns Metz 45 series by Luni

Last crawled date: 3 years ago

DISCLAIMER: Read this FIRST!
I can't be held responsible for anything that may happen to people or things by using or applying the informations contained in this document: if you do not agree don't read further. You have been warned.
DANGER!
The disassembling of a flashgun is DANGEROUS!
Remember that even disconnected from power and/or removed battery pack, a capacitor for flashgun can still retain for long time HIGH VOLTAGE that can hurt and even kill!
If you decide to disassemble or repair a flashgun please, take all the precautions to avoid incidents, wear goggles, thick rubber gloves and DISCHARGE the capacitor before acting on it, shorting its terminals with a 1000ohm 10W resistor for at least fifteen seconds or more.
THE THING!
Do you own an old Metz 45 flashgun with the high voltage capacitor gone bad?
You can make it to work again by simply replacing it with a new one, but...
The high voltage capacitor is sometimes too expensive to justify the repair for the value of the flashgun or, having been able to find an affordable price on the Internet, is often longer than the original one (65mm), not allowing the insertion of the batteries after its replacement.
As you can see, I already had this problem and I thought that you will find in my project a useful workaround to repair your flashgun with a 40x80mm capacitor.
You can print this extension to be able to continue using the original battery pack.
The only work to do on the flashgun casing, with the help of the 'just printed' piece, is to mark and drill two 2,5mm holes on each of the two little flaps that help to slide the battery pack into its receptacle, to allow to screw the extension on them, as shown in the photos.
To screw the piece I cutted four 3xMA countersunk head screws, leaving 2 millimeters of thread from their heads.
The .STL file foreseen two supports for the internal latches of the battery pack, as you can see evidenced in red in the drawings above. These supports consist of thin walls (0,2mm thick), that must be removed with a sharp cutter, taking care of not cutting off the latches themselves.
Thanks for reading and have good 3D printing time!