So I’m one of the buyers that won’t be able to use my GF without the air filter. My estimated emails for laser and filter are Dec. 12, 2017 and May 4, 2018, respectively.
I’ve been looking for possible filter alternatives. I stumbled upon this blog post
Is this design adequate? If so, is anyone interested in creating a kit that I (and others that might be interested as well) could assemble ourselves? Cost estimate?