Posted: August 25, 2014
I have a few questions so I hope you experts can help!
Do you recommend sealing these planters?
What size masonry bit do you recommend?
Are there any issues with air bubbles? Should I poke the concrete between the buckets with a thin dowel or something?
Personally, I like the idea of casting them with a pipe inside to make a drain hole, but it seems it would be a bit tricky to keep the pipe upright in the mold when you are squishing the inner bucket down.
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Hi there! Thanks for your questions. We didn't seal our planters, but you could. They'll get darker where they are wet if you don't seal them. So, it comes down to your personal preference. Our mixture was very soupy and wet, so we didn't have problems with air bubbles. And, the size of the drill bit doesn't matter. If you use a small one, we suggest drilling multiple holes for drainage. Best of luck! Let us know how they turn out.