The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

Category: Home Ec

Things around the home & hearth

Toilet Valve Mystery

Last week Mary reported the toilet in the front bathroom had the sound of running water, which is unfortunately the sort of noise I can no longer hear. I replaced the flush (a.k.a. “flapper”) valve, because it’s always the flush valve, cleaned the valve seat, washed my hands vigorously, cauterized both stumps, and declared victory.

This week she reported it was once again leaking.

A bit of poking around showed the tank was now full to the top of the overflow pipe and the refill tube was piddling down the pipe: obviously, something was wrong with the fill valve, because the flush valve was sealed tight.

Having been through this rodeo a few times, I fetched a replacement valve disk from the Box o’ Toilet Stuff, installed it, and was about to declare victory when I noticed the refill tube was still piddling.

Pop the top off the fill valve and peer inside:

Toilet Fill Valve – aligned

Did you see it? I didn’t, either, when I replaced the valve disk.

More fiddling produced this view:

Toilet Fill Valve – cracked

The valve seat is attached to a plastic stem going down the length of the fill tube, but it’s free to rotate on both ends. I have no idea what applied enough torque or how it could break all those ribs, but there they were(n’t).

Fetch a complete valve kit from the aforementioned Box, drain the tank, install All. The. Parts., verify that the valve now shuts off properly, declare victory, etc, etc.

Whereupon I could switch caps and begin making the weekly pizza.

Never a dull moment around here …

2022-12-20
Christmas Cookies: Mystery Date Code

Spotted during a grocery trip:

Christmas Cookies – date code

I’m sure they have a good reason for whatever date code format they chose, but 2012272 seems open to misinterpretation in the runup to Christmas 2022.

2022-12-19
Laser Cutter vs. Mirrorshades: Front

Well, a shattered lens found beside the road on a walk:

Laser vs sunglasses – focused overview

The battered frame has enough information to suggest they were once rather fancy. At this point, all that matters is they have two glass layers separated by a dark plastic polarizing film, with a gold-ish metallized front glass surface.

I fired the two pulses (on the left side of the obvious crack) at the front of the lens, both at 100 ms / 70% power:

Laser vs sunglasses – overview

Neither pulse penetrated the lens.

The smaller zit was fired in the position shown in the first picture, with the focal point more-or-less at the top surface of the lens. As seen from the front:

Laser vs sunglasses – focused front

The outer part of the damaged area is about 0.5 mm in diameter. The heat around the damage seems to have cleared away all the schmutz on the lens; those things that look like scratches are oily smears and road dirt.

Seen from the rear:

Laser vs sunglasses – focused rear

The rear surface is blistered, but doesn’t have a hole, so I think the beam melted the glass and inflated a cavity along its path.

I then perched the lens in the unfocused beam path, with paper taped over the laser head opening to keep any fragments off the mirror and focus lens:

Laser vs sunglasses – beam front overview

The beam produced the larger scar and also blasted off a ring of crud around the wound, as seen from the front surface:

Laser vs sunglasses – beam front

The beam seems to have shattered a thin layer under the metallization, but didn’t do any deeper damage. The rear surface is undamaged and the paper didn’t have a scorch mark.

They’re not laser safety glasses, but at least they didn’t disintegrate.

Protip: do not lie on the laser platform and stare upward into the laser head, even while wearing fancy polarized mirrorshades.

2022-12-15
Bed Frame Feet

Quite some time ago I slipped felt pads under the feet holding the bed frame off the wood floor and recently noticed two of them perpetrating an escape. My first thought was a variation of the 3D printed Fuzzy Felt Feet holders under our power chairs, but the bed frame feet are much larger.

The holders are basically rings surrounding the feet and felt, which LightBurn makes easy enough:

Bed Frame Feet – LB layout

The Foot Retainer is 6 mm plywood, the Plate and Felt Retainer are 3 mm.

I fired a ranging shot to verify the sizes:

Bed Feet – clamping

Then do three more, apply wood glue, and deploy Too Many Clamps.

The fuzzy felt feet are about 5 mm thick, so the 3 mm plywood shouldn’t quite touch the floor. Alas, the fuzz squishes more than I expected, so I added the chipboard Felt Spacers for a millimeter more clearance:

Bed Feet – chipboard spacer

They’re glued to the Plate with the felt adhesive side stuck to them:

Bed Feet – fuzzy felt foot

The felt and chipboard compress under load so now it behaves as it should:

Bed Feet – installed

Gotta get better at gluing plywood together, though.

2022-12-14
Laser Cutter: Fire Extinguisher Brackets
A Genuine Kidde Fyre Freez CO₂ extinguisher that Came With The House™ finally found its ideal location:

Fyre Freez extinguisher – mounted

It was last refilled 65 years ago:

Fire Extinguisher Recharge Tag – 1957

I know it’s still good, because the label has its 4 lb 7 oz refilled gross weight stamped into it, which is exactly what it weighs today.

Walter Smith Welding Supplies may still be in business, perhaps in Poughkeepsie, but their former 18 Downs St location in Kingston has become Noble Gas Solutions:

Noble Gas Solutions – 18 Downs St Kingston – 2019

Back then, you could call Smith Welding at a four digit phone number in Kingston: 5061. Nowadays, you must call Noble Gas with three more digits: 338-5061. As Charles Stross observed, something like 70% of the future is already in place, because infrastructure is so tenacious.

Heck, just look at that Quonset hut!

Keep calm and extinguish on:

Fyre Freez extinguisher – step 4

Two thoughts spring to mind:
- Most kitchen fires start waist-high (it’s the late 1950s: where else would she be?)
- She’s gonna lose skin on that metal tank
Seems to me a Fyre Freez will get cold enough to freeze skin while discharging, but I admit to not having actually tried it.

Anyhow, given the overall basement decor, the brackets have the right general style:

Fyre Freez extinguisher – bracket detail

Here’s hoping its future will be as dull as its past …
2022-12-13
Encounter With A Cash-for-House Scammer

This conversation started during the few hours when I had to turn off my phone’s incoming-call whitelist filter:

Cash Home Sale SMS

Seems to me a cash-for-house buyer who believes anything the seller says about the property is both new to the “real estate” biz and not destined for a long career. Obviously, the whole exchange attempts to increase my engagement and make me agree with everything going on.

Now, should you happen to be moving to the Mid-Hudson Valley and need a really nice shop with an attached house, let me know: we can work out a better deal.

Protip: if you’re in a position to stack seven thousand Benjamins on our kitchen table, don’t get between us and and the horizon.

There is a reason all my calls and texts go through a whitelist filter.

2022-12-12
Drug Fact Sheet: Overdose

For reasons not relevant here, a new medication has entered the house, accompanied by its Drug Fact Sheet (blurred because you do not have a Need To Know):

Drug Fact Sheet

The background squares are a scant one foot across.

The other side of the sheet is equally dense.

One should review this with each refill to check for new or changed information. Of course, there are no change bars or similar hints.

It might kill ya or cure ya, but you’ll never figure it out from that torrent of verbiage: just like software EULAs, nobody can possibly read and comprehend that stuff.

2022-12-09