Rebar stake the first layer of timbers down, then secure the second layer over top the holes however you want, 10" spikes or GRKs or whatever you are comfortable with. Not much works better for the price than rebar for this kind of thing though. You could also set both layers, drill through, forstner the top of the hole larger, rebar them together deep, and glue a plug over the top.
shanewreckd t1_j9re0y5 wrote
Reply to I’m building a border around a playground with landscape timbers, and wanting to secure it with something other than rebar. by _aPOSTERIORI
Rebar stake the first layer of timbers down, then secure the second layer over top the holes however you want, 10" spikes or GRKs or whatever you are comfortable with. Not much works better for the price than rebar for this kind of thing though. You could also set both layers, drill through, forstner the top of the hole larger, rebar them together deep, and glue a plug over the top.