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6d ago

in

Question about building a workbench that actually stays flat

and honestly I couldn't believe it when I read your post cause thats almost exactly what happened to me with my first bench. @emma_smith nailed it about the wood not being dry though, I didn't even think of that at the time. I used the same 2x4 and plywood setup and after a month it looked like a hammock in the middle. The fix that actually worked for me was adding two more cross braces running the long way under the plywood, like extra support beams spaced evenly. But really the biggest difference came when I switched to MDF for the top layer, its way denser and doesn't sag as bad as regular plywood. Just make sure you seal it good with some polyurethane or itll soak up moisture and warp.

6d ago

in

Appreciation post: I found a busted expansion joint in a garage floor last Tuesday

That cracked filler issue is a common one in Phoenix with the heat. You're right to check the joint spacing, even on small jobs. I've seen where the filler shrinks and pulls away from the edges in just a few weeks, leaving a gap for dirt and water to get in. That water can freeze in the winter and make the problem worse over time. Best practice I've found is to use a self-leveling sealant that can handle the temperature swings and apply it in cooler morning hours so it has time to set before the sun hits it.

8d ago

in

My neighbor's night sky photo from last year vs this year is wild

Wait, aren't those orange lights from old sodium bulbs, not new LEDs?

8d ago

in

Lactic acid peels changed my mind about mandelic acid

Right, it's wild how easy it is to just stay with what's comfortable even when it's not the best fit. I've totally done that with my own routine until I got tired of the same old results and finally just switched things up one day. Honestly, once you do it once, it's way less scary to try something new next time.

11d ago

in

I finally got a real lesson on gating from a mold maker who's been doing it 40 years

Respectfully disagree with the whole "old timer knows best" thing. 40 years in the same shop doesn't mean they've kept up with new materials or flow analysis software. Bet Mike's tricks work great on the 1980s steel he learned on, but modern polymers and thin wall designs change everything. Blindly copying what a senior guy does can lock you into old solutions that miss better options. Saw a shop waste months chasing a 40 year veteran's "proven method" when a $50 software simulation showed a totally different gate location would have fixed the inclusions faster. Experience isn't always right, sometimes it's just repetition of mistakes.