Monday, June 4, 2018
27th Quantity Surveyors
Saturday, June 2, 2018
Fixing Ford AC Head Controller Vacuum Problem
The AC on my land yacht (2009 Mercury Grand Marquis) has been in the fritz for a while. Last winter, it gradually stopped switching from max AC/recirculate (a necessary in Vegas), then got stuck on norm AC until it rested on Defrost/Floor. I was able to fix it with some basic troubleshooting, YouTube sleuthing, and two bucks in o-rings.
This shaky yet informative video by Ian Smith helped me diagnose it as a problem with vacuum only. The AC itself was fine. It blows cool air all day long. It just did so at the windshield. It couldn't be the blend-door actuator.
The same video showed me how to diagnose the vacuum problems. The black hose providing vacuum from the engine seemed fine: I was getting 20 inches of vacuum with the car turned on when I hooked up a bleed pump with a gauge (mine came from Harbor Freight, shown in the video). To test the actuators, all I had to do was hook a 'jumper' pipe from black to the other pipes. Each one seemed to hold air, and the actuators sprang to life once again. For the first time in a year, I had cold air blowing from the vents. The problem couldn't be in the lines. I pulled the controller head for a closer look.
The head itself is a bunch of electronics, a control panel, and one removable plate with four solenoids. The vacuum hoses come into this through a manifold, and the head controls trigger the solenoids to route vacuum from the black hose to the others. This triggers different actuators under the dash. Something was amiss in the manifold.
I returned to YouTube looking for rebuild instructions. I found this extremely helpful video from a Chicago mechanic. The solenoids contain an o-ring that dries out, wears out, and loses the ability to hold vacuum. I obtained close to the recommended o-rings from Lowes (#36, 5/16 OD, 3/16 ID, 1/16 thickness) as I was not willing to wait for Amazon. A little Oatey silicone lubricant made the tight squeeze work a little better. I found I had to seat the solenoid heads at least once before total reassembly. It was too difficult to do so at the end and fight with the other small parts at the same time. 45 minutes later, I had full control of my AC restored.
I can't believe it was this simple to fix the controller. I think I was intimidated by the AC (having spent $1500 last year to have the dealer redo the whole system from seals to refrigerant). I didn't want to break anything. A few targeted troubleshooting steps helped assuage any fears of irreparable harm, and now I have a comfortable cabin once again.
Wednesday, May 2, 2018
The Best Thing About Hero Quest...
Thursday, April 5, 2018
The Glowhawk: OFBC Gaiden
We were only able to print a few OFBC 2.0 cases before DEFCON 26. The leftover parts would have sat in my toolbox for quite a while if not for a serendipitous mistake: I ordered the wrong color LEDs from Sparkfun. This plus a little construction advice from a seamstress helped me cobble together the glowing headgear that is The Glowhawk
Tuesday, April 3, 2018
Urns
I was the responsible party for my father's estate as his wife does not speak English very well. As such, it fell to me to arrange the funeral, notify friends, and start to organize his affairs. I kept it together. The arrangements were made, the bills were covered, and all in a few days. I kept it together, that is, until I tried to return to work. I got ready. I even got in my car to go. But I could not. Instead, I went into the shop and executed a simple design for holding a portion of his ashes.
The material is Indian Rosewood (the same that I used for the magnetic bottle openers). The strong grain made mitered corners a natural choice. I even had enough contiguous grain to try to book-end most sides. I didn't have a keyed or splined miter jig (which could have strengthened the corners), but I figured the lid and bottom would provide a good brace against failure.
The second half took a few more months to pull off. Uncertainty about the accuracy of the cuts lead me to put the project on hold. Should I delay and try to true then with a shooting board? My girlfriend gave me the most wonderful advice once: when you find yourself rushing a project, put it down and come back later. The parts to three urns marinated on the bench and in my mind for a few months.
I finished the bottom with plywood. If I had to pick a spot where I'm uncertain about my choices, it's here. Glue is strong, but how will the baltic birch bottom hold up over time? I'm thinking of throwing in some brads there just in case. The bottom served as a canvas whereon I could memorialize my father. I was able to burn the message "Invictus Maneo", the Armstrong Clan (and our ancestral) family motto. Loosely translated, it means, "I remain unconquered."
This entire project was an object lesson in how I'm still learning some of the most basic techniques in woodworking. I need a way to clean up miters that start on the saw. A shooting board or similar has been recommended. Fine adjustments on my existing miter sled might also work. Though it didn't seem too bad once finished, the tearout for certain cuts makes me think I have a dull blade. I'll have to investigate, tune, and try again.
I think I've worked through a phobia of complex geometry. Something my father always talked about is how to hide your mistakes in woodworking. Bookends, miters, and a fitted lid left precious room for that, but I found a few tricks along the way such as meticulous test fitting, blue tape as clamps for difficult pieces, and patience above all. Regardless, I'm looking forward to the next boxes I build. I hope those have a markedly different emotional footprint.
OFBC 2.0
- Battery: 850mAh Lipo
- Switches: Hinge Lever Micro Limit Switch
- Mosfet: N-Channel 60V 30A
- Transistor: NPN Transistor
- Resistors: 100K and 3.5 Ohm Resistors
- Slide Switches (ensure pitch matches the PCB)
- LED: Cool White, Aluminum Backing
Next, we redesigned the case. Instead of a three piece design requiring glue to assemble, the two pieces would be a base and a lid with a logo. Everything could be screwed into designed posts and covered with the lid. It was a snap. Production was easier with Shapeways. However, this lead to had longer lead times that prevented us from delivering to the barbecue. The prototyping went well and matched the designs, but the mass printings were so delayed that they didn't arrive in time for the barbecue even with expedited shipping. The resin product looked much better than the filament-printed 1.0 model. The cost at 20 bucks or so each was not prohibitive, but it certainly wasn't mass-market ready.
Design Pics
Updated Lid Design for Toxic BBQ 2018
Friday, March 30, 2018
Hardback Review
Received my Hardback copy that I Kickstarted. Having played Paperback once or twice, the thought of an evolved version piqued my interest. Here's an initial take after an unboxing and one game: I loved this playthrough, and I'm looking forward to the next one!
Press your luck - In most deck builders, your hand is your turn. A bad draw leads to an unsatisfying nothing turn. Not so with Hardback. Use ink and remover to turn a bad draw into a high dollar buy. I like that drawing cards (a coveted power in Dominion and Star Realms) is a core mechanic rather than in the soup of card benefits.
The power of not buying - In most deck builders, you need to buy something by the end of your turn. Use it or lose it. Adopting this in Hardback can lead to filling your deck with trash letters (L. Ron Hubbard syndrome) and a perennial lack of money. Instead, go for quality by NOT buying cards and instead buying ink. This allows you to play ACROSS turns by saving up ink, drawing all your cents next turn, and dropping it on that sweet consonant or Perennial Classic with great benefits. Once we realized this, play went a lot faster as we could buy high cost cards. We just had to wait and plot and plan.
A Game About Words - Our first game was with 3 people: one experienced gamer, one apathetic adult, and one ADHD preteen. I was worried that, like Scrabble, the word part of the game would turn players off. Instead, it provided fun stories and interesting interactions. You can turn any card into a wild and lose its benefits, so using all your cards can help you, but not as much as the above pressing your luck. I played two words that mean 'toilet' while my tongue-tied son bought "reveal adjacent wild" cards so he could focus on getting points.
Surprisingly and Pleasingly Interactive - There are no attack cards as a benefit in the standard game, but that doesn't mean it's not interactive. When in doubt, Just give up: Ghost Writer let's you play open-hand and rely on other players. They even get ink as a benefit! For a genre rife with negative player interactions ruining games (no-attack Dominion is a staple at our house), this is a refreshing way to add positive interactions. The Perennial Classic mechanic is similarly combative but not adversarial, and the Jail benefit and ability to reset the offer row can elicit a groan or two while you foil your opponents' plans.
OMG The Design There are puns everywhere, the cards are complex but not cluttered, the cardstock is pleasing to hold, and the use of meeples rather than tokens makes it chunkier than the small box lets on. Leaving room in the box for more cards might hint at expansions, but it comes with plenty of alternative ways to play. I can't wait to break out the player powers and co-op mode.
I know Paperback was hard to get for a while. If you have a chance and need a deck builder with less combat and more pithy reveals, get Hardback.
Link to Reddit discussion: https://www.reddit.com/r/boardgames/comments/7tlini/hardback_first_impressions