My grandson and I are going to start making trees for his “O” scale MTH train layout.
I’m going to use the same method I did for HO scale, using armatures from brush and shrubs, found growing localy. While searching for the right branch structures for HO, it amazed me how many I found that would be perfect for O scale.
I spray the armature with a coat of adhesive, ( many to choose from, I use 3M Super 77, and I’ve also used unscented hair spray), then I ad peices of polyester foam fill, to “fill” out the trees, simulating smaller branch structures.
Once I’m satisfied with how it looks, I give the whole tree light coats of dark gray primer spray paint, using very light, kind of like “whispy” (is that a word?) puffs, until I don’t see any more of the white showing on the fiber fill.
At this point, the tree looks real good for winter time bare trees.
Once I’m happy with the over all color, and after the paint has fully dried, I start adding the ground foam foliage, using light coats of 77 to keep it place. once again, little amounts at a time to slowly fill out the tree. The fiber fill gives a nice “fluffy” tree, with out using up so much foliage.
Once that is done to my satisfaction, I seal it all with either light coats of 77, or the unscented hair spray.
The 3M 77 does kind of have a “whitish gluey” look if you use it too heavily, so light coats is the rule.
This seems like a long process, but it real isn’t, and I do about 8 to 10 trees at a time, with the trunks stick into a piece of foam board, to support them during the process, and for final drying.
It’s worth a try, if your not satisfied, you can always go the manufactured products like Woodland Scenics.
I also try to scratch build something, until I get satisfying results. It’s part of the hobby for me.
Have fun!
Mike.