Is it my turn? Anything to do with lathes, mills and other shop tools

Are those brass pins installed with Loc-tite or epoxy, or just a good press fit. Guess one could also cross drill the mounts and insert a 1/16 inch roll pin in each if one was real paranoid!
 
Score of the month.

Princess Auto (Canada’s version of Harbor Freight) stand up blast cabinet for $20. Needs some TLC (sealing and cleaning), but should be a solid unit when done.


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Still in search of a lathe. Got out bid on a few at the local online auction last week.
 
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Score of the month.
Princess Auto (Canada’s version of Harborne Freight) stand up blast cabinet for $20. Needs some TLC (sealing and cleaning), but should be a solid unit when done. - - - .

Hi SEd,
needs 10 + CFM @ 90 PSI dry air to run that unit.
And keep it's ownership a secret unless you want swarms of strangers bringing their rusty parts to visit.
 
Well I bought this chinese 2 HP mill/drill this weekend . Couldn't pass it up...figured I could always sell it for more than I paid and it would be a good entry level mill to learn on. All the accessories and tooling it came with are
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worth as much as I paid for the mill itself. A physician is moving down state and had it as a spare sitting in his amazing dream workshop alongside a $6,000 cnc mill, a $25,000 laser welder that he said he could micro weld hypodermic needles with, and a nice cnc lathe. He would build medical equipment and wheel chair stuff. Fun getting to know him. One of those guys who is so smart its scary. He owned several clinics, is a pilot of over 30 years, and at 70 is teaching medical interns on neuro science/medicine. This spare mill still had the original cosmoline on it. Got it home, cleaned it up, and it runs good. Will need to rewire it for 220 and get a DRO. Tolerances seem to be quite good for a cheap mill. Looking forward to seeing what this will do as I continue this fun motorcycle hobby/excuse to expand my workshop.
 
At 750 lbs, tis a heavy duty drill press for sure. Took a shop crane and come-along with three of us the better part of 2.5 hours to get it loaded on my trailer.
 
One tip I can give that will save some time and money (not to mention add safety and reduce frustration) is leaving the belts a bit loose. Not to the point of constant slippage but enough so that if you stall in a cut you simply don't have the belt tension to destroy end mills, drill bits, setups, toss crap across the shop, launch parts and the vice into your face, and generally invite a trip to the emergency room if not just costly breakage and or extreme frustration.

Okay, the above is a bit tongue in cheek and meant for the novice. Still I have an issue with the beginning home or hobby machinist "upgrading" their fractional horsepower motor to something like a 2-3 HP just to say they've done it . Why? Generally this modification just tears things up sooner than later. A little bit of slippage and a moderately sized motor is a simple and easy safety device.

So the other side of that coin is some materials (nickel and stainless steels)require more consistently deeper cuts with multiple indexable carbide inserts requiring more torque.
Here mass and inertia as well as motor HP come into play. If the machine and setup will tolerate the forces involved then the extra HP and Torque becomes necessary rather than a why bother modification.

Okay school is out and now back to our regular habits of happily wasting time making chips :) !!

@2XSive , In your case (since you are not exactly new to this) just one reminder. Expose as little quill and tool as possible.
 
Hydroxylammonium nitrate

Anyone want to play along at home?
This is a low pressure (delivery and sealing)
and High pressure (ignition and combustion) sealing project.

Initial mechanical work started over a year ago with pneumatics and has since progressed to a Oxy/Fuel small vessel combustion model.

Work now begins on the 10K PSI plus sealing system.

I'm only putting it here because I know the fine minds that exist here. I may not know all of them.

For reference we rarely ever see pressures over 1,800 psi (well yeah CH3NO2 , but let's be real) in our gas engines. We do occasionally see flame front temperatures over 4,000 degrees but this temperature is highly localized and more of an instantaneous value.

https://www.sciencedirect.com/topics/engineering/flame-front for the MENSA members , work it out for yourself :) or just accept the Wiki answer https://en.wikipedia.org/wiki/Adiabatic_flame_temperature#cite_note-che.msstate.edu-2

So I'll go over this with the think tank and the two intellectual property holders to see what they are willing to release . In a way I believe in freedom of information but like Shakespeare said "a mans got to get paid" .

If I get any traction here I'll start a dedicated thread.
If not I'll just build an alcoholic XS 650 , again , still , well , yeah like that ...
 

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@kopcicle

I unfortunately can not contribute too much besides that I think that the German laboratory of flight studies "Deutsche Versuchsanstalt für Luftfahrt" DVFL was involved in such trials.
I find such topics highly interesting but unfortunately or maybe under a "rational" point of view fortunately in contingental Europe it's already hard enough to get sufficient quantities of methanol alky fuel not even talking bout nitrometh or hydrazine.

All the best and keep us posted.

Good evening

Christian
 
@Hudriwudri , I'm kinda on hold at the moment so the high pressure sealing experiments are in limbo.
I'm temporarily away from my shop so all I can do is research and dream :-/

There is plenty of theoretical and practical information available for cyclic sealing or high pressure sealing but combining those with liquid propellants and ignition systems is new ground. You leave pneumatic and hydraulic sealing behind around 3,000 PSI and enter mono-propellant rocket combustion chambers shortly thereafter.
The leap from 3K PSI to 40K and beyond is well known to firearms but there are important differences.

Rather than the application what I do here will be about the machining operations and sealing techniques.
 
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Craigslist Score! Matco toolbox full of tools. I do have the missing drawer, I pranged it getting the bottom box out of the truck. Bent the piss out of the slides, I'll see if I can order some replacements. HEAVY sumbitch!

matco2.jpg


There's some Snap-on and Bluepoint test stuff I have no use for. Radiator pressure tester, a Halogen/CFC leak detector an adapter kit for I don't know what, some pullers I'm not sure what they're for. Distributor wrenches, Snap-on Sensor Socket, some other odds and ends. Anyone wants any of this stuff, I'll let it go cheap.

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Haven't tested the air tools yet. Blue point, Porter-Cable, Snap on.

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Nice digital vernier caliper, dial indicator, Snap-on Anniversary wrench in a presentation case (I'll let that go if someone wants it).

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Mostly older (good) Craftsman wrenches, a couple Snap-on, a couple that have been bent for some job or another.

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Sockets are a mish-mash, haven't gone through them yet other than to sort them by drive size.

Gave $475 for the whole shootin' match. This solves my problem of moving my big box into the new shop and not having any tools in the garage.
 
View attachment 193715

Craigslist Score! Matco toolbox full of tools. I do have the missing drawer, I pranged it getting the bottom box out of the truck. Bent the piss out of the slides, I'll see if I can order some replacements. HEAVY sumbitch!

View attachment 193716

There's some Snap-on and Bluepoint test stuff I have no use for. Radiator pressure tester, a Halogen/CFC leak detector an adapter kit for I don't know what, some pullers I'm not sure what they're for. Distributor wrenches, Snap-on Sensor Socket, some other odds and ends. Anyone wants any of this stuff, I'll let it go cheap.

View attachment 193717

Haven't tested the air tools yet. Blue point, Porter-Cable, Snap on.

View attachment 193718

Nice digital vernier caliper, dial indicator, Snap-on Anniversary wrench in a presentation case (I'll let that go if someone wants it).

View attachment 193719

Mostly older (good) Craftsman wrenches, a couple Snap-on, a couple that have been bent for some job or another.

View attachment 193720

Sockets are a mish-mash, haven't gone through them yet other than to sort them by drive size.

Gave $475 for the whole shootin' match. This solves my problem of moving my big box into the new shop and not having any tools in the garage.
That's a smokin' deal!!!
 
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