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Your pics show a dead center in the tailstock, and a VERY shallow center drill for the size of the stock you are using.

I suspect that if you just invest in a set of center drills of assorted...

You can beat the price and work envelope size with either of the mill/drill units from Microkinetics. This is the better of the two units they offer:

http://www.microkinetics.com/cncdmill.htm

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Everyone knows the old line about "man the tool user"... not too many know the corollary to it: "woman the people user".

If you don't care to be used (usually to death), stay away from 'em ;)

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This may be naive, but if you are working from a graphic or a plot file, why not simply edit the original into two files? Run the complete one for roughing, the second with only the detail areas left...

The tiny flux core units pretty much suck, imo. Far better off to spend an extra $50-100 and get a decent stick welder with enough amps to actually fuse metal. (imo again)

Something like this or a...

www.roton.com offers a good selection of pretty much everything acme. MSC has taps and also indexable inserts for cutting acmes as well as gages.

To be honest, I've never found mcmaster to be of...

Well sure. As with anything else you can make more trouble than you fix if you don't use some sense and do things right. If you're going to do any cutting, it's pretty much up to you to make sure...

Go ahead and cut factory surfaces if they are rough or out of true. This "never touch" is fine if you are talking about high dollar production machines that *should* be true and accurate to begin...

try the BobCAD help file; look for "workplane".

I'd be more specific but I'm not a bobcad user so have no clue beyond the terminology.


Tiger

Nah, the bigtime hoods get theirs out of the backdoors of police property rooms. They don't need to do any building; they already own sources of supply.


Tiger

It's on a homemade aluminum split. You can see the cut plainly clear across the exposed face.


Tiger

It's called an expanding arbor. Like these


Tiger

There's a simple and cheap shortcut method: pick up a few single flute bits and grind the profile you want using a bench grinder or dremel style tool. It's only just a bit more complex than grinding...

5C has internal as well as external threads on the back end of the collet, which allows use of things like adjustable stops so that you can make sure every workpiece has the operations performed the...

Don't have any pics of moving mine, but I always did it by hand. Break it down to table, knee, head and column and pack 'em to the new place then reassemble. Gets a bit fun climbing the stand while...

The little knee mill is almost a clone of my old JET bench mill, and that one has been a real workhorse for me. I used it for years as a manual, and for years more with a microkinetics cnc retrofit...

Nice setup Vince, and a nice concise writeup on the website. Been a while since I was "into" PV systems... that 25 yr projected panel life caught me by surprise, as cell life was running something...

The beauty of the striker block arrangement in a blowback design is you don't have to add any length to your bolt/receiver at all. You just "slice off" a bit of the rear of the designed bolt mass to...

Jon, can I make a couple of suggestions on your USC derivative?

If you're going to work with an open back receiver, I'd suggest using a rear inserted barrel with a retaining step on the breech...

There's nothing quite as "guy comfy" as a workbench that's obviously had the crap beat out of the working surface. Just sort of makes you want to grab a chair and settle in for a nice BS session,...

Well that's just plain wrong. They need to retrain whoever did that rube goldberg... there's not a single piece of bailing wire in it. How can you do proper redneck engineering without any bailing...

Well that's pretty much a "duh" scenario, imo. Take a piece of 3/4 ply and prop it up at the edges on 2x4's and jump up and down on it and the ply all by itself will be undamaged, so it's saying...

"what are you doing about energy prices?"....

sort of leaves the question of just what I'm supposed to do about them, given that I have no input into the pricing of petroleum.

fuel prices are a...

That's assuming the load is equally distributed over the entire section, which it isn't going to be. Load is going to be concentrated at support points; on gantry sides the loci are going to be the...

Actually, that's a viable option. I've used automotive frame straightening equipment that used torsion box uprights welded up from approx .090" CR steel sheet, and those upright posts would withstand...

The first suggestion was for a "foot in the door" means of getting the product into the market. Low investment (aside from labor time) way to test the waters as it were.

For large scale production...

Personally I'd use a router with a shoe plate made for it that had a 1/8th brass strip screwed to it 1/8th of an inch from the cutting bit. Use it as a fence to make your first cut, then use the...

Rust is a real problem with those little sears/atlas jobbies. I fought it with mine for a long time. Finally found that a good application of Oxpho-Blue bluing compound from Brownells put a stop to...

G- None of the above. I did retrofits on my lathe and mill years back to increase production for my business. Couldn't keep up with demand using manual machines even with production grade jigs and...

Here ya go. Second item down on the lefthand side of the page. Caliper extender


Tiger