Those estimates were based on a fairly heavy workload, and they may be a little overkill, but I think that the filter should probably be checked that often, and cleaned when necessary.
The lack of primary dust collection is a major gap, and will make that unit work much harder than it should. This is really something that it is urgent for us to address from a liability, and a health and safety perspective. The fact that we have educational activities going on in this shop, and have not addressed this basic shop safety requirement is a major issue.
The thermostat is in an awful place directly above the servers (this reminds me of a story where a company had their servers constantly overheating because nobody noticed the thermostat was below the outlet for the air conditioner) and it’s a pain to reach unless you drag the ladder out.
In the meantime FYI I have turned the heater off at the thermostat and switched the red circulation pump off at the switch below relay C in the boiler room.
@derpko had a look at it last night and we think the issue has been solved.
This does bring up the issue of if there’s a problem with one of the machines you work with PLEASE deal with it or tell someone
@kile lets dial you into the discussion about the Classroom reno, the Social Planning Grant requirements related to it, and the opportunity to do the Classroom AND the Kiln Room in the same window. We need to avoid middle May for reno’s, because of Kathleen Raven workshop and 100th Hack.
I demonstrated on my tiger wheel instead but I did show how to use the big wheel anyways, I just didn’t throw on it. No rush on working on it as I won’t be demonstrating on it for a while. But new people can use it to their liking.
@clarkwerk Absolutely. Aluminum in the presence of most strong acids reacts to produce hydrogen gas and heat. In large enough quantity you get fire or explosions. (When I was in high school, we used to fill garbage bags with H2 gas by taking a plastic conainer of H2S04 or HCl, dumping in crumbled balls of aluminum foil, and throwing the bag over… Don’t ask what we did with floating bags of explosive gas!) In small quantity, the acids will cause pitting of the surface of the aluminum, which increases the surface area of the pitted part, which then reacts more rapidly… Causes pinholes then crumbling.
We passivate stainless by soaking in strong acid until the iron at the surface is eaten away, leaving a chrome and carbide surface (which is mostly non-reactive to the acids)
We have placed on long term loan a delta chop saw that was given to us by Michelle’s dad. It is new old stock. Practically new because it only saw really light work. Old enough that it didn’t come with a finger guard. Heavy enough that I had to brace the table.
i found very thin scraps of ply on in the Mt Paul industrial area where it is used in shipping. They were happy to have me take it away. There is also a gazebo/deck manufacturer that puts out tons of scrap–in this case non-ply, and they are also happy to have you take it away. Let me know if anyone wants to meet for me to show you these places.
Laser is back up - I bought and installed a new 12’ USB A-B and Kile and I installed it in such a way that it does not get beaten by users. Laser freely, brothers and Sisters.
And thank you to @Pierre who diagnosed the problem in 2.4 secs.