Welcome to RAWWERKS! This site features the work of Raymond Weitekamp. I mostly make materials and music.

Open-Source Utility for Stereolithography

The key to successful stereolithography (SLA)1 3D printing lies at the intersection of chemistry, hardware and software. The photopolymer recipe, the optics of the printer, and the print settings are all interdependent. If you make a big change to one, you will likely need to tweak the other two. Despite the fact that SLA printing is now fully democratized (there is a Kickstarter running right now for (yet another) $150 SLA printer), there is not much useful information online about how to ‘dial-in’ a reliable SLA printing process. »

Rejected...

I recently wrote about why I think it is important to share your failures. The idea behind my Rejected… series of posts is to do exactly that. It is not my intention to spite those that have rejected me. Instead, I want to celebrate rejection and thank the gatekeepers for keeping me out. There might be a healthy release in ranting a bit, but catharsis is not my primary objective. My goal is to choose stories that have the potential to meet at least one of the following criteria: »

Rejected From Amazon Associates

(This is the first post in my Rejected… series) Recently, I thought it would be fun to share some of my favorite books and tools on this site. My motivation for revamping this site was to lower my own activation barrier to sharing, this seemed like a good place to start. I had recently hung out with Spencer Wright of The Prepared fame, so perhaps his tool guide was in the back of my mind. »

Please Share Your Failures

It is our natural tendency to want to share our successes and hide our failures. In many ways, this is a confirmation bias towards conformity. As a society we celebrate success, there is a clear advantage to portraying oneself in the most successful light. The only problem with this is that we almost always learn more from the failures (both individually and as a collective). Every airplane crash contributes to the improvement of the safety of the overall aviation industry. »

An Open Source Stack for Physical Science Startups

It is hard enough running a ‘hard tech’ startup. Hardware is one thing, but companies bringing physical science innovations to the world have it toughest of all. Mother nature can be a very cruel compiler. Do not abandon hope! There are many tools available to help you on your journey. As with most things in life, the best ones are (often) free. Here, I have curated a short list of open source apps and tools that have been useful to us at polySpectra. »