I recently picked up a Weatherflow and I have to say, so far it's a very cool device. I have been playing with it in conjunction with the Strelok Pro Application (iOS) which I have used for some time. I have been impressed by the level of integration and simplicity once the Weatherflow is paired to the app. Precision shooting is all about the details, so every bit of help I can get - I'll take it! I was frustrated by the lack of a weather "Vane", and noticed that the Kestral line has a commercially available vane for $50, but is a poor substitute when used with the Weatherflow. Mostly the balance is off, mounting or modifying the cup to hold the Weatherflow is just clunky. I have looked high and low for a commercial product or even some DIY plans (that didn't include hot-glue, duct-tape, or jamming some foam into the Kestral vane cup) - but came up short. So I went to work designing something that would be practical, durable, balanced, and accurate. So here we go... Davis Instruments replacement wind-vane (7904) Fidget Spinner bearing 1/4" ABS sheet 1/4-20 tripod mount adapter (male\male) 1/4-20 1" standoff 5/16" Shoulder bolt 1\4-20 1/4-20 nut and lock-washer 1/4" rubber washer 2-56 x 1/4" Button head screws ...and a little Loc-Tite I had to supplement the toolbox with a couple things along the way with things like a 21.3mm Forstner Bit that allowed me to press fit a 22mm bearing into the ABS firmly enough to stay put - but I had most of what I needed around the shop. The Davis Wind Vane had to be modified to allow for the bearing plate to fit flush by removing some of the internal structure and a 1/4" hole needed to be perfectly centered - through the top... which was pretty easy since the only useful structure inside the cup on the bottom of the vane was a 1/4" shaft mount which served perfectly as a guide for the hole. The real fun began with the design and machining of the base plate. This had to be concentric and wanted it flush-fit. The edges of the plate were beveled to match the angle of the inside rim of the vane's cup. I made a jig so I could duplicate the plate if I needed to fabricate more. (two friends asking for one already, more on that later. lol) Once I had it together I was happy to find the vane is balanced and spins true and free. The spinner bearing might even spin too free, but the last thing I wanted is losing the vane's sensitivity because of a greased up sticky bearing. One design change I am considering at this point is a taller standoff on top to mount the Weatherflow meter so that it sits above the height of the fin on the vane. I want to experiment with it, but I feel like the airflow is a bit disrupted by the face of the meter being perpendicular to the vane. In practice, it's averaging out, but I am still going to test with a standoff. About any tripod will do depending on your exact needs... but for initial testing I just grabbed a tabletop tri-pod and started testing. SO... I pulled this out at the range and immediately had two friends ask if I would build one for them... which got me to thinking about the possibility of doing a "batch" of them. My machining process is certainly repeatable, but the last thing I want to do is order the parts to do 2, and find out there is a demand out there for more - I'd rather source the materials in bulk. So the idea of "selling" these or building more is on hold until I can discern the interest level in the community... Is there an interest? Would you buy one? Does this inspire you to go build your own? PLEASE let me know in the thread if you would be interested or if you see an improvement in the design that needs to be addressed. If justified, Ill generate a thread in the classifieds if it comes to that. In the meantime, I plan on a review of the Weatherflow when used with the Strelok Pro App... with the vane of course. ;P THANKS!