Kevin McMahon

Enthusiast

Blog Search

Carvey Replacement Hinges

The internet is almost as impressive as my ability to break things. This is a story about how I broke a CNC machine and was able to not only find the exact replacement parts but order them for next day delivery within about 20 minutes.

tl;dr

The Inventables Carvey model I am using uses Southco E6-10-301-20 Series Adjustable Torque Position Control Hinge with Holes.

Southco E6-10-301-20 Series Adjustable Torque Position Control Hinge with Holes (PDF)

Amazon Link

What Happened

Recently a friend let me borrow a Carvey that was taking up space at his place and, not 10 mins after getting it powered up, I broke it. To make a long story short, I racked the lid when attempting to pick it up, which caused both hinges to fail catastrophically. The hydraulic lift, which props the lid open and provides a soft close, put a tremendous amount of pressure on the device’s plastic hinges. Once the first hinge failed, the second failed immediately. It felt like my heart was going to be next.

After calling the very understanding owner and apologizing for destroying the hinges, we discussed the steps necessary for repair. Inventables support is great. I’m sure I could’ve got replacement hinges from them. But that would take phone calls, support tickets, and waiting for them to ship one-off parts. The parts are just hinges. If we could get replacements, it is a simple process to affix them to the case. Maybe we can find replacements ourselves.

So the search began. After coming up empty via the search engine route, McMaster-Carr was the next stop. It turns out there are tons of different hinges. McMaster-Carr apparently has all of them. We were however able to find something that looked promising. With the specs of the McMaster-Carr hinge now in hand, I got my calipers out. The sizes matched (give or take a ten-thousandth of an inch). We felt good about having a viable replacement option, but the question lingered if we could do better.

After a closer inspection of the broken hinges, I noticed that they had Southco branding. A quick search of their site led us to the spec sheet of the Southco E6-10-301-20. That was it, and of course, Amazon has it stocked and ready to ship.

The fact that I was able to identify these hinges, source them from a supplier, order a small number of them, and have them shipped to my door in two days is amazing. That I was able to do it within 20 minutes after I broke them blows my mind—what a world.

Favorites from August 2020

A collection of some of my favorite links, images, tweets and quotes from September 2020. This is not an exhaustive list but does captures some things I found interesting, thought-provoking, or cool over the past month.

via wendy macnaughton on Instagram: “Art.”

Quotes

Favorites from August 2020

A collection of some of my favorite links, images, tweets and quotes from August 2020. This is not an exhaustive list but does captures some things I found interesting, thought-provoking, or cool over the past month.

Nostalgia is a helluva drug.

This blue box is the last thing in the world that I thought our democracy would hinge on.

Reading

Admiring

Watching

Cooking

Ordering

Ideas

“A bad system will beat a good person every time.” W. Edwards Demming

via @marshallk

“The optimal strategy might be executing a suboptimal plan at a fast pace. Strategy evolves as lessons are learned—and the person who moves faster, learns faster. Learning is a marathon and perfection is a weighted vest.” – @JamesClear

Favorites from July 2020

A collection of some of my favorite links, images, tweets and quotes from July. This is not an exhaustive list but does captures some things I found interesting, thought-provoking, or cool over the past month.

The worst ride of 2020.

Reading

Ideas

Our lives are based on symbols and mental models that we use to understand and internalize the external world. But are our mental models “accurate working models”? — David Deutsch, via @ruthmalan

Filed for Later Use

JavaScript tip via Tomek Sułkowski: “npkill” is a nifty little tool that shows all node_modules in your system - and allows to remove the selected ones.

npx npkill