You will need to resize these to fit your tree before printing!
Some replacement base stands for a fake christmas tree, look at the last image to see the kind of style base these are made for. My tree measures around 180cm in height & 80cm at its starting point in diameter, although it easily wobbles, you have to push it quite far for it to not just re-balance itself. To my knowledge there are no standards to these but it should be pretty easy to just resize the part that slots in, to whatever your tree uses.
I recommend printing 1/2mm smaller than your actual tree slot for tolerance. I found that although my test model was a bit loose, my final bases stayed in great with friction. My tree's slots measured around 13 x 13 x 58mm so the square slot part on my bases were 12 x 12 x 57.5mm, you may want to print the test model first to make sure your measurements are correct.
Printed with:
The author marked this model as their own original creation.