Yaesu FT-891/LDG Z-100 Plus Cradle

For years, I have used metal rails on my FT-891 and a Velcro strap to secure my LDG Z100Plus on top of it.  With the way I treat my radio gear, I found the metal rails to be overkill and I didn't like the way the tuner would slide around under the strap. I travel prolifically with my radio gear, so having everything secure is important.  I have always had a system to secure and immobilize the radio and tuner in a Nanuk 935 case along with associated radio gear. This is part of a revamping of that system.

I designed this cradle to provide front and rear bump protection to the FT-891 and secure the Z100 to create one cohesive unit.  It uses the pre-existing mounting bracket holes on the sides of the FT-891 and the holes on the Z100 for securing the top to the device.

The two pieces on each sides are secured together with two M4 heat inserts melted into the top and bottom of the mating tab on the rear rail pieces (red arrows) and an M4x12 screwed in from the top of the mating tab on the front rail and another from the bottom (green arrows). 

The rails are secure to the FT-891 with M4x12 socket head screws. The two sides are secured together on the top with two M3x8 socket cap screws and M3 nuts. Unfortunately, the Z100 uses imperial screws, so it is secured using #4-40x½" screws in each of the 4 corners.

Hardware needed:

8 - M4x12 Socket Head Cap Machine Screws

2 - M3x8 Button Head Machine Screws

2 - M3 Nuts

4 - M4 Heated Inserts

4 - #4-40x1/2" Round Head Machine Screws

Printing:

These were printed on an Ender 3 V3KE.  Since the print side was limited, each side is two parts.  If you have a larger print area, you could potentially Boolean each side rail together and skip the heated inserts and mating screws.  

I printed these in PETG using 4 side walls and 30% gyroid infill.  You will need to enable supports. The STLs are not oriented for printing.  I suggest printing with the exterior side of the rail on the bed as it limits supports and provides a good amount of bed contact.