Thanks bobcat, but I don't see ourselves needing another grinder anytime soon, and even if we get raided we have more than enough spare shells for another

they do jump to purpur..?

that's correct, they'll only jump to air blocks within a 17x17x17 area centered on the shulker where the air block is next to a solid block

Yes, Nutjob our grinder is far from perfect. I considered doing what you said with the two killing platforms and alternating the water, but decided not to for both simplicity, elegance, and the simple fact that we're only losing a small amount of efficiency doing it our way (up to 12 shulkers are still able to spawn in the 30-45 seconds it takes for the shulkers to drown, depending on lag). From hours I spent last night watching the grinder in action, I'd make a rough estimate that that design flaw loses us 10% efficiency at the absolute maximum. Also, it would be more efficient if our spawners were farther apart so as to not have an overlap in spawner caps, but we had to work with what we had available on the server.

Edit to expand: As shown in the video, it's possible to keep the water off and manually kill the shulkers. We have a strength 2 beacon set up to aid with this, and this would have 100% efficiency for our setup

If that didn't make it clear, the actual grinder goes all the way to the coal blocks you see in the very beginning of the video, there are no solid blocks within that range

@humfrydog I basically mapped every single space that the shulkers could get to, then never gave them a solid block that they could tp to withing 8 blocks any direction of those spaces. I wanted to maximize the number of shulkers the spawners could spawn at a time, which is a 9x9x3 area centered on the spawner.

edited to show contributors :P

Hey guys, I've been talking to several people about shulker grinder designs and I wanted to show off the grinder we've been working on for over a month now. It's an original design by myself, wblaine128, and CovertRaw and as far as I know it's the only shulker grinder using spawners anywhere on the internet at this time. Since we opted for a relatively solid box surrounding the grinder, it took a very long time to build. I myself probably put in at least 15 hours on CraftyMynes building it after deciding on the design on a creative realm.

I hope to put up a shop post sometime tonight including preorder prices, as we will have access to bulk numbers of shells (hopefully) within minutes/hours of the server updating depending on our availability

Original design by cepheid, wblaine128, and CovertRaw
Built primarily by cepheid and _MasterDragon_
Other contributors and moral support: ZenithW, adamblakely2, and Beedobi

Also please forgive any sloppiness/quality issues, this was the first time I've ever tried recording and I even made a cepheid Youtube account just for this post

Edit: link to shop found at https://forum.craftymynes.com/3868-selling-shulker-shells-boxes-now-accepting-preorders

But they will in 1.11. I don't know when the server will actually update, but 1.11 comes out tomorrow @Captain_Mitchell

As I said in TheBlizWiz's post:

Myself and the towel gang have already finished our grinder, and I hope to make a shop post with pre-order prices (for pickup day 1 of the update) by the end of the day today