Comments on: A Classic STEM toy: Rock Tumbler https://gregladen.com/blog/2018/11/02/a-classic-stem-toy-rock-tumbler/ Fri, 02 Nov 2018 16:31:24 +0000 hourly 1 https://wordpress.org/?v=6.4.8 By: Anonymous https://gregladen.com/blog/2018/11/02/a-classic-stem-toy-rock-tumbler/#comment-660914 Fri, 02 Nov 2018 16:31:24 +0000 https://gregladen.com/blog/?p=30792#comment-660914 In reply to L.Long.

As long as your driveway does not run off into a drain!

]]> By: L.Long https://gregladen.com/blog/2018/11/02/a-classic-stem-toy-rock-tumbler/#comment-660911 Fri, 02 Nov 2018 16:23:29 +0000 https://gregladen.com/blog/?p=30792#comment-660911 I have a gravel drive way, no problem getting rid of the sludge.

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