Looking to blast small parts with a 4 CFM compressor at home

Looking to blast small parts with a 4 CFM compressor at home

Just picked up my first air compressor. It's a 4 gal, 4 CFM portable unit from Dewalt. I know this wouldn't be enough to handle heavy blasting work, but I'm hoping it would be sufficient for some light duty, household jobs (cleaning up door hinges, hand tools, bike parts, etc.)

Any recommendations on a small, self-contained unit like the Zendex Speed Blaster, HF Central Machinery 18oz, JobSmart 2lb, or something similar?

Also, what else will I need to get started? I've got a full face respirator and plenty of tarps. It sounds like an air dryer/filter would be helpful but I'm not sure whether a small inline filter would work or if I'd need something more serious.

u/Groundblast — 14 days ago

Why does a school bond measure require 60% while a constitutional amendment only requires 50%?

Coming off the local elections in Bismarck, it seems pretty backward that ND requires 60% of voters to approve school funding but only 50% to approve a constitutional amendment.

I’m strongly in favor of funding schools. I’d challenge anyone to argue why we should not be giving our kids adequate facilities.

Not quite so sure on the constitutional amendments. The ads I’ve seen make me angry at the people supporting the 60% measure but I do have reservations about having a low bar for changing the constitution. We’ve already seen the state override popular local legislation, so it seems like it might be a good idea to put more limits on state power.

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u/Groundblast — 16 days ago
▲ 2 r/paint

Painting with a small compressor - beginner questions

Picked up a used Dewalt D55152 4 gal, 4 CFM air compressor for general shop tasks. However, I do quite a few small painting projects and I'm curious about learning to use a spray gun.

I recently replaced some HVAC grilles and painted them with color matched spray paint from a local auto shop. It worked great, but the small cans were $30 each. Another recent project was refinishing a dresser. I did that one with a small foam roller. It wasn't as expensive, but the amount of work sanding and recoating to get a nice finish was insane.

I've seen some conflicting info on HVLP vs. LVLP spray guns. It sounds like HVLP would be more beginner friendly but I'd also spend a lot more time waiting for the tank to charge. What would be the best spray gun for my situation? Not opposed to investing a bit to get something good quality.

It sounds like an inline filter dryer is a must. Not sure what the best way to implement this is though. I'd like to keep things portable, so I'm considering trying to mount it to the compressor frame upstream of the regulator so I can still use the quick disconnects. Would I need to flush out the gauges/regulator/manifold/etc?

What would be your recommendation for hoses and connectors? I've just got one short, cheap hose the compressor came with and no major tools yet. I'd like to get some quality accessories so I don't end up buying twice.

Once I'm set up, what's the best way to learn? Any good YouTube tutorials?

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u/Groundblast — 16 days ago

Drafting standards/best practices? - Optimizing templates

I work for a small firm and my team is working on revamping our Revit project templates and drafting standards. Our current ones were developed in the early days of CAD and then ported over to Revit 10+ years ago.

Does anyone have any good industry references or sample plans? Not looking to copy anything, just want to get some ideas

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u/Groundblast — 23 days ago
▲ 5 r/Bass

Compression: analog vs digital?

How do you think digital/multi-effect pedals compare to a classic analog comp?

I’m mostly looking at a MXR M87/SansAmp stack vs. a midrange DSP like an HX Stomp or a Darkglass

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u/Groundblast — 1 month ago

High CRI, warm tint portable lamp/lantern for nighttime baby feedings

My wife asked me to find her a good portable lamp for nighttime feedings with our infant.

There are some cheap “egg lights” and our toddler has a soft touch glowing capybara light that fit the bill, but I’d like to get something a bit higher quality.

Anyone have any suggestions?

Edit: Thanks for all the input! I’m getting a CL01. Good size, fun color options for the kids, and a battery bank for my wife’s perpetually dead phone. I’ll do an update when it arrives!

u/Groundblast — 2 months ago

Best use of recent legislation

We’ve seen some really amazing progress on 2A rights lately, and there’s potentially more coming down the pipeline. While we can debate what things will/should look like moving forward, I’d like to take advantage of the opportunity while it exists.

So, I’m looking at a suppressed SBR with an FRT. I see three main options (but I’m open to any suggestions)

  1. 5.56mm/.223cal AR15

  2. .300blk AR15

  3. 9mm PCC

I don’t know much about the FRT world, but I know I want something with true semi auto capability. I’m not interested in “giggle switch” only. I’d also like something pretty well proven and reliable. I only have a few guns, and I want them to work.

Let me know what category you’d suggest and how you’d build it out!

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u/Groundblast — 2 months ago

Bot accounts

There’s been a lot of posts lately about political issues that seem to have bot activity.

Can we do more to address this?

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u/Groundblast — 2 months ago

New worry: resonant frequencies in grilles

I just saw something insane and my wife isn’t nearly as blown away as I am.

I heard this weird, high pitched noise while sitting on the couch. Comes and goes. Seemed like it might be my ceiling fan bearings going out or something. Yay, home ownership.

Well, I walk down the stairs to go take a shower and I hear it get loud as I walk past my return grille. Turns out, the fucking thing is resonating at about 1400hz. Frame isn’t loose, it’s just the blades. I can feel them vibrate and it stops if I rest my hand on it. They were pretty dusty, and it seems like that changed the airflow/mass enough. I cleaned it off and the noise almost went away but not entirely. Now I can’t unhear it and may end up needing to change it out 😂

u/Groundblast — 2 months ago

Powder/ammo storage

How are you storing your powder/ammo?

I currently have mine in a closet, but we recently had a small fire (lithium battery) and it’s got me a little concerned. I’ve got a few lbs of powder, some primers, another few lbs of tannerite, and maybe a thousand rounds of loaded ammo. We recently had a baby, so I don’t have the money to buy a large gun safe right now. I’d like to add a bit of safety though.

Would a simple metal cabinet make any difference?

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u/Groundblast — 2 months ago

Warranty request: 2012 Charge

I’ve got a Leatherman Charge (I think from 2012, handle stamp “0512”) that I lost a couple years ago and recently found while cleaning. It’s a great knife and I’d like to get it tuned up!

Biggest issue is that the diamond file is shot. I also had it “professionally” sharpened by a company that kind of trashed the main blade. Other than that, it’s just general wear and tear.

I don’t see this model available anymore, so I’m a little concerned about what would happen if I send it in. If it’s marked “sentimental,” will they be able to fix the issues? If not, what would they replace it with if they don’t have parts available?

u/Groundblast — 2 months ago

Best hole saw for 3/4" birch plywood?

I need to drill about fifty 2"ø holes in 3/4" birch plywood. This will be a finished product, so keeping the rough holes as clean as possible is a priority. Planning to drill a pilot hole, tape the cut, and then drill halfway through from each side.

Read some forum posts and watched the ProjectFarm test video. It seems like the Milwaukee Hole Dozer is a strong contender. My local shop has both bi-metal and carbide tooth options. The carbide is 3 TPI, the bi-metal is a little higher at 3.5TPI.

Thoughts on which one would be best here?

I'm also open to any other product suggestions or tips on getting the best results!

u/Groundblast — 3 months ago

The defining trait of ignorant people is self-assuredness. Their narrow, obscured worldview makes them feel secure in their misinformed opinions.

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u/Groundblast — 3 months ago

Timing Belt and “Tune Up”

Got my 2013 Pilot at the dealer for a wheel bearing replacement today. They’re also recommending a timing belt service and a “tune up.”

Any thoughts on this? What exactly would they do for a “tune up?”

u/Groundblast — 3 months ago

UPDATE: My Hanklight Exploded

I reached out to Hank. Like some comments suggested, the lack of damage to the spring indicates a battery failure rather than a short circuit within the light.

I was hoping to have a bit more interest in the failure of the light body, which I believe to be dangerous.

Edit: I’m not trying to suggest there is something negligent or even unique about the D1K design. I only have this one experience, which seems to be pretty rare. That said, I have a background in medical device design. Failure analysis is how you learn to make things better. Not every failure can be anticipated, but this risk posed by similar events in the future can be mitigated.

u/Groundblast — 3 months ago
▲ 1.3k r/Electronicsinindia+1 crossposts

My Hanklight exploded

Just had my D1K explode while sitting on my nightstand. The tube and tail cap ended up lodged in my ceiling. Glass blew out the front and the button popped out the side. Battery must have gone flying and ended up under the nightstand where it melted my power strip and chargers.

I’ve heard of this happening on a charger or if something gets hot or punctured, but this was just sitting. Glad my wife was home or our whole house could have burned down. Had this happened overnight, my head would have been ~1ft away and my 2 week old baby would have been across the room. I like cool flashlights, but this is not worth it.

Samsung INR21700-50S battery.

u/Groundblast — 3 months ago

Mattress support for vintage bed frame. Any input?

Planning to make a mattress platform/support to use in place of a box spring on a vintage king size bedframe. Current thought is to use 3/4" baltic birch plywood.

Let me know your thoughts!

u/Groundblast — 3 months ago

Impact of fenestration pattern on bending stiffness in sheet material?

Are there any general guidelines/rules of thumb for the impact of fenestration (drilling holes) to the stiffness of a sheet material?

I am working on a horizontal structure which requires ventilation. My thought is to use plywood with a grid of holes drilled into it. Obviously, the size and pattern of the holes will impact the mechanical strength even if the total area of removed material is equivalent.

Some of my main questions are:

  • How to determine optimal hole size/spacing?
  • How does a straight grid compare to offset rows?
  • What is the optimal distance from the edge of the sheet (or the edge of the support structure, excluding overlap) be from the first hole?
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u/Groundblast — 3 months ago

Anything in here worthwhile? $10 each

Saw this post on my local marketplace. I don’t know anything about vintage razors, just started a few months ago with a Henson

u/Groundblast — 3 months ago

Why do I like fireworks?

Everyone else in my family (parents, siblings, wife, kid) range from mildly enthused to mostly bothered by fireworks. They make me so happy on a deep, primal level.

Even as a little kid, my parents never lit fireworks and mostly complained about the noise and the mess in our neighborhood. Meanwhile, I would sit out on our deck and watch them until they would force me to go to bed, at which point I would open my window and just listen to the sound. I also love thunder and the feeling of the bass at a concert. There’s just something so viscerally satisfying about that feeling in my chest.

Where does that come from?

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u/Groundblast — 3 months ago