This is a remix of Telnoi's excellent EOX Battery Frame/Frame Stiffener. All that I did was add landing gear to Telnoi's great design. Printed with PETG. 6 layers and 20% infill. It weighs less than the stock battery frame and landing gear that it replaces (12.1g vs 13.6g). The fact that it strengthens the frame is a major bonus. I've made it with different lengths of legs, but (so far) am only uploading what I consider a decent "generic" length. Also, I only used the 4 bolts on the booms to hold it in place along with wrapping the velcro around the underside of the main frame and through the slots on this frame (then, of course, around the battery). When you print it out, it seems a little dainty, but when it's bolted in place, it's solid as a rock! I just uploaded a second iteration with slightly longer and thicker legs. If you're prone to "hard landings", this one will take the abuse a little more. If you're printing with your own printer, you can stop the print wherever you want if you want shorter legs (I'd say any time after 65% or more). Looking at the last pic, you can see the difference in the thickness of the legs. Not a ton, but definitely more sturdy (and 1g heavier).