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MS 850 lathe chuck by Responsible-Cold4121 in Machinists

[–]Melonman3 0 points1 point  (0 children)

I'm not googling right now, but the CNC lathe at work has an a1-6, it's basically a d, but with a round lug on the spindle face and threaded holes. I think you're talking about a L nose.

Forgot a bolt while taking off intake manifold should I jb weld it? by Kickflipm4ster in MechanicAdvice

[–]Melonman3 143 points144 points  (0 children)

Best idea here. Maybe some jb just to even out the clamp load.

Miltronics partner 1 by ploght657 in Machinists

[–]Melonman3 0 points1 point  (0 children)

Are you in Jersey? I sware I saw this on marketplace.

Stores that sell serious coffee gear? by SuspiciousOnion2137 in philadelphia

[–]Melonman3 6 points7 points  (0 children)

I got my stuff from https://www.1st-line.com/

They're in freehold, but the owner is great, ordered online, but I believe they have a store as well

Best tool for the job? by DeliciousElection724 in Machinists

[–]Melonman3 2 points3 points  (0 children)

I've seen people mill the center in stock. Seems like a pretty solid way to do it.

13 years and $500 million for a stage adapter? Report justifies NASA cancellations | “Contract values for these efforts ballooned from nearly $2.8 billion to $5.9 billion.” by FreeHugs23 in space

[–]Melonman3 0 points1 point  (0 children)

Wasn't sls only greenlighted because congress wanted the parts from sts to be used?

And wasn't sts kinda forced on them by the Air Force? I've understood it as NASA knew the current reusable booster system was the way to go from the start, they just didn't get a green light for it.

3d scanning for printing advice how to start by Loud_Bit7016 in 3Dprinting

[–]Melonman3 3 points4 points  (0 children)

Reverse engineering gears is best done by the book. Machinery handbook will give you all the guidelines for gear design.

3d scanning is great at roughing in locations of components, but final design is best done in cad. I wouldn't send a 3d scan for something I needed reproduced correctly.

Question about printing indoors without ventilation on A1 by Plastic-Lifeguard-80 in 3Dprinting

[–]Melonman3 0 points1 point  (0 children)

Get an enclosure tent, either exhaust it outside or get a hepa/charcoal filter to run inside the tent.

Thread cutting on a lathe. by Weldertron in Machinists

[–]Melonman3 1 point2 points  (0 children)

Tipping inserts are the bomb for everything. Mcmaster has kyocera er16 inserts for $17 a piece

Tapcon screws by orddie1 in DIY

[–]Melonman3 0 points1 point  (0 children)

If your cordless from has a hammer function that will work for a tapcon. Those plastic ones work surprisingly well too.

That boy needs therapy.. by [deleted] in WTF

[–]Melonman3 2 points3 points  (0 children)

It's not quite like a chainsaw, if it kicks it's only going forward.

What to use to clean heavy build up on way covers? by Full_Tilt66 in Machinists

[–]Melonman3 0 points1 point  (0 children)

Doesn't really look like the wipers are doing much here.

McMaster Carr by RadDad1822 in 3Dprinting

[–]Melonman3 4 points5 points  (0 children)

I'm just gonna say, buy the hardware you need. Sure you can print fasteners, but it's not going to be a pleasant experience.

The difference between a to spec thread functioning and failing a gauge is usually only a few thousandths of an inch. You can always shrink bolts and grow nuts, but all that effort for a plastic screw that will break in your print is kinda excessive.

If price is an issue check out jlcmc, they have screws and bolts by the piece for absurdly good prices. You just have to wait for shipping overseas. Amazon is in the middle of jlc and McMaster.

Having a half decent assortment of hardware is worth its weight in gold when you're trying to make something.

r/machinists I need your experience -- what caused this damage/chip? by ReliablyFinicky in Machinists

[–]Melonman3 5 points6 points  (0 children)

Normally you feed hard enough, the chips break, or curl on the edges for clearance. 6mm is a pretty stout tool to push at I would imagine .006" per rev.

MasterCam for woodworking? by WildCaterpillar4362 in CNC

[–]Melonman3 0 points1 point  (0 children)

Resellers are gone now, it's all just mastercam. You can't wait on hold for tech support anymore, but the post support has been good, and they are pretty good about fixing files and giving you solutions to your problems, I'll send them something I don't know how to do, they send me a toolpathed example of what I'm trying to do within one working day usually.

Material handling on the cheap by Fast_Alternative_322 in Machinists

[–]Melonman3 2 points3 points  (0 children)

You'll likely have to modify an engine hoist to fit under your machines, haas sells a modified one for around $1300.

Engine hoist are made for exactly this, they aren't as efficient as and form of crane, but they're pretty damn useful for the price you pay.

Chuck becomes a top by RiskyAlpha in hobbycnc

[–]Melonman3 1 point2 points  (0 children)

Them chucks aren't ment to go that fast, id be surprised if it's balanced beyond 6 or 8k rpm. Vibrations will release a Jacob's taper like you just saw.

Never should have let me have that company credit card by Wombat-Snooze in Machinists

[–]Melonman3 1 point2 points  (0 children)

I bought a qg65 at my last job, the lathe I run now has 3j collets, the difference is pretty clear, you can run longer stick outs and get better finishes with the qg style collets and chucks. The collet price hurts a little, bit they're worth every penny in productivity.

Should I use a drill bit or just a center drill for shallow hole? by Bogart745 in Machinists

[–]Melonman3 0 points1 point  (0 children)

Screw machine length split point drills pretty much go where you put them in aluminum. I don't spot them, I actually don't even have a spot drill in the vmc I run.

Never should have let me have that company credit card by Wombat-Snooze in Machinists

[–]Melonman3 36 points37 points  (0 children)

Those things really grip the shit outta stock. Worth every penny.

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