I just finished another swing. I use IPE wood this time. The local hardwood store only had 4/4 Ipe wood. So I had to glue up a lot of wood to get an 8/4. That was no fun. I just rubbed it down with Tung oil. Used titebond III and exterior screws. This is very very hard and heavy wood. I had to pre-drill everything. They call Ipe the mortgage wood…it will last 30 years outside. I included my sketchup images. I love sketchup. I pre-build everything in sketchup first. I work out a lot of issues before I go to the shop. Plus it gives very close image of what your finished project will turn out.