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Resin 3D printers have a much higher resolution than most other 3D printing technologies, especially the desktop FDM printers. The downside is that most of the standard resins are brittle. There are several companies developing much stronger "open" (can be used with most printers) resins that rival the strength of FDM printable materials. Siraya Blu This material is very strong, but fractures under bending loads rather than deforming, especially in my application which was

2026 UPDATE! I'm now mainly using the following two-stage process to rapidly inflate multiple paddleboards. When we go out on the water with family and friends, I inflate anywhere from 2 to 6 paddleboards. Use a cordless high-volume blower to rapidly fill the paddleboard's bulk air volume until it is fully inflated, but not yet pressurized. This gets the first step done so much faster than any single electric pump I have seen. Use a high-pressure, 2-stage SUP pump to pressuri

After weeks of trying on and off to upgrade one of the Dell Precision T3600 computers in our office from Windows 7 to Windows 10, I finally

How to build a dust collection shoe for the Tormach CNC milling machine, and other (bridgeport style) machines that have a similiar style sp

I'm assembling a camera rig for shooting video using the iPhone (or Android smartphone), and need dual channel (stereo) mic inputs. By default, the audio jack on these phones is 2 channel out, one channel in (TRRS type connector). So it's only possible to have mono input if using the headphone jack. Therefore, the only way to get stereo input is to use the digital input, Lightening or Micro USB connector, on the phones. I've found several such devices that allow for mixing 2

The AGM house batteries in my Sprinter based RV are starting to perform very poorly. It's time for an upgrade, and I don't want to go the AGM lead acid route again. I've been keeping an eye out on LiFePO4 batteries because 4 cells in series works well with a standard 12V DC system. An eBay seller had an interesting packaging for a 12V 100Ah pack. He was putting them into metal ammo boxes PA-19, and including a balancer and a battery voltage meter. Specs for the PA-19 ammo

These solar panels have been one of the best additions to the Dodge/Mercedes Sprinter camper van. Each panel is a high quality 100W Renogy Solar panel originally intended for residential solar installations, but work great on mobile installations too. The first step of the process was to install a roof rack rail system. I didn't want to permanently install the solar panels on the roof, whether through drilling and screwing it in, or permanent adhesive mounts. Ultimately I wil

Here is an instructional video on where to find, and how to fill out a project survey on Kickstarter.

We've discovered an easy way to convince backers to double their pledges. This works particularly well with Early Bird pledges, or offering a second item at a discount. Usually one of the lowest pledge levels only includes 1 item, and often times these are EB pledge levels. You can tell people on the Kickstarter page, or in the pledge description that they can add extra $$ or double their pledge for more than one item, but often times backers don't read that. The easy way

Marketing agencies that work with you to promote your Kickstarter campaign will need to be added as a collaborator and given a specific amount of permissions. Figuring out which permissions to give them can be tricky, so here's a guide. The most basic permissions that a marketer will need is the ability to "view backing activity and access the backer report". This gives them the ability to create tracking links so they can see what advertisement channels are bringing in bac