Help with Robert Lang cockroach step 68

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Help with Robert Lang cockroach step 68

Postby BradBlankenship » October 20th, 2015, 5:45 pm

I am confused with step 68 of Robert langs cockroach. It says bring layer a in front of flap b but I can't wrap my head around how to do this. I may be missing something simple but need help please
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Re: Help with Robert Lang cockroach step 68

Postby dinogami » October 26th, 2015, 10:44 pm

Basically, you have to unsink a single layer of paper. The step is the equivalent of swinging the whole top assembly (B) to the right, then closed-sinking it to the left underneath a layer of A.

Personally, I dislike the "wrap a layer" method of depicting/describing such de facto closed sinks. Sure, it's an accurate description of what's going on, and it saves a diagramming step, but it generally seems to cause more confusion among folders (at least, until they figure it out)--I remember it took me quite a while to decipher what it meant the first time I encountered it (long before this forum ever existed, I think)!
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Re: Help with Robert Lang cockroach step 68

Postby jupstin » December 11th, 2015, 12:14 am

Thanks so much for this. I was stuck here, and a google search led me straight to this page.
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