The residue is likely a byproduct of using dollar store alcohol. The bitterants they use to denature it and keep people from drinking it leave residue. If we were in Alberta, I’d try Everclear. That stuff is a pretty decent residue-free cleaning agent.
Posts made by pierre
RE: Members Meeting, Sunday May 28th 6pm!
Back ups of Makerspace data
Can we do this? I have my own folders backed up, but should everything be done?
Far as I know, there is not really any on-site data, except maybe the financials. All the CNC machine gcodes are essentially ephemeral in nature… We might leave them on drive for convenience of re-running a job, but there is always a master drawing or file to fall back on, and in which the edits happen. I suppose we could back up the slic3r and cura configs, and maybe the firmware settings for the machines, but it is just as easy to post our findings to the forum as we’ve been doing so that if we ever need to rebuild the configs, we can naturally do it on the more recent software.
There are a couple of general “email, checking status on jobs and looking stuff up” machines floating around (one in the craftorium, on in the lounge, one in the hack room… But they really don’t hold any special data.
I’m not sure what all lives on the design lab machines, but I suspect that the software lives on the computers and people keep their files on key-drives or other storage.
If and when we ever get proper network storage set up, it’ll likely be cloud backed in some way.
RE: Potluck 7pm Sunday
After action report: We had good food and good company.
Was sort of sad to see that some people I was hoping to talk to did not make it, but still a good time. Prime rib roast, gurkensalat (which is different from the space’s usual fare of kabel salat!), coleslaw, soda pop, potato salad, two types of pie, lemon truffles, and likely some other stuff I don’t recall.
I’m going to try to BBQ there at least once a month through the summer (I’m also going to try really hard to show up at least once a month…). Expect burgers or bratwurst or something occasionally.
RE: What is the next thing we should do with the Prusa money?
Those LACK tables get used in some pretty interesting furniture hacks. I think they’re just torsion boxes made from cardboard and door-skins.
Apparently Lo-Boy has supplied us with a pair of Roombas to hack on. That is too cool to pass up. My initial digging says that we need to pop a hole in the top cover and it’ll expose a serial port from which a microcontroller can tell it what to do and poll the sensors.
Only one catch: The port is an 8-pin mini-DIN connector. If anyone has a couple to spare, or can hit RTS while the 100th hack is in progress, I’ll happily buy a pair of those connectors off them. @megan-fenkhuber might be interested in arduino-operated robot platforms for the robotics thing she’s doing tomorrow too.
Here is interesting info about the Roomba Serial Command Interface.
Here is a picture of a Scutter:
See where I’m going with this?
A number of modular shells that fit the Roombas would be near ideal I think. Daleks, Haunted house props, etc.
RE: Gas torches
I run both oxy-propane and oxy-mapp in the little torch likely similar to the one you already have… But tend to go O/M because the oxy is the expensive part, and Mapp usually gets it done much faster. I have a beautiful jeweler’s size O/A torch (as well as regulators, cutting torch, hoses, anti-flashback kit etc…) but don’t currently have any gas cylinders for it. I’ll probably get a little R-tank or similar and mod my torches to do oxy-propane (mostly just re-drilling the jets) with a BBQ tank. Make a nice portable kit. If I get more serious at some point, I can always get a second (larger) tank to keep in the garage and only use the little tank to go looking for trouble.
I also have a couple of tiny butane torches, a gasoline blowtorch (too much for your CCFL, but I have been known to use it with a moka pot to make coffee…) and a very old Lenk Duplex automatic blowtorch much like the one in this video:
That one or the little butane torches are likely to be the most precise things I can offer you for glass work right now.
@colin has my ridiculous foundry torch, but I’m pretty sure it would just turn your CCFL into a puff of smoke and a pool of glass.
RE: Building a 20' diameter geodome greenhouse
+1 for use of all-round strapping. That stuff is super handy for redneck engineering and emergency field repairs. A cordless drill, some 2x4 scrap, a bucket of screws and a roll of that stuff is enough to secure almost anything temporarily. Use in place of duct tape when the consequence of failure is dropping something on yourself.