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Messages - lloydsp

Pages: [1] 2 3 ... 564
1
Andre,
The 'machine home' is the furthest left and down (toward you) it can go.  'Homing' is an automatic function on most mills and routers, simply by clicking on the 'home' button.

However, home is NOT necessarily the zero/zero point of your workpiece.  After homing, you should carefully position the cutter at EXACTLY the lower-left corner of the workpiece, and set that as the 0,0 point of your job.

Lloyd

2
Kelly,
The front-left corner of the WORK is 0,0,0.   That's NOT the 'home' position.  The front-left limit of travel is usually past the corner of the work, in both directions.

My two bed-router machines 'zero' at about -9" in X and about -5" in Y from the front-left of the work-piece, assuming a 4'(X) x 8'(Y) sheet of stock.

My milling machine zeros about 2" left and 2" below my customary placement of the work, which might be any size up to 18"(X) x 12"(Y).

Lloyd




3
"I'd really like the front left corner of the machine to be 0,0,0 for several reasons with X+ to the right and Y+ away from the front."
------------------------------

That's the correct way to view any CNC machine.  CB is perfectly-capable of making that the origin.  I do -- most of us do.

Most folks don't make the exact 'limit of travel' to be 0,0,0, but pick the spot at the very front-left corner of the work as being that.  Most machines travel sufficiently past both edges of a work-piece in both X and Y, such that there's a bit of 'over-travel' available in order to cut clear to the edges.

Lloyd

4
Dave,
That looks to be a pre-made cable with a 'molded-on' ferrite spike snubber.

For Kelly's situation, he should be made aware that those ferrites can also be purchased in a 'clip-on' form to fit existing cables.

Lloyd

5
CamBam help (General usage) / Re: Duplicate Co-ordinates after G2
« on: July 30, 2021, 15:15:08 pm »
Or, you may 'engrave' that part, even though you may be using a flat endmill.  CamBam knows the difference, but your milling machine or router could care less.

Engrave centers the tool on the line, automatically.

Lloyd

6
No,
I HAVE angled-hole drilling cycles using 'fan' bits (dovetail cutters) for use on the non-tiltable newer machine.  Any hole with less of an angle than 45-degrees can be cut with those routines.

But the old machine has been modified so that the head can actually be rotated sideways (along x only) to drill 'straight in' with a Forstner.  It has indexing holes and marks for all the angles I use on these plates, so it's just a matter of removing/re-installing four screws, and using NC files that have accommodations for the different horizontal offsets such angled drilling will require.

Being able to drill at an angle really reduces the time required to to a sheet that has over a thousand such holes!  FWIW, it also leaves cleaner bottoms in the holes.

Lloyd

7
Heh!  I fired-up my older router, which has a 'tilt head', so I can drill angled holes.

It was making 'noise' in Y, and shortly-thereafter, the Y-axis driver board failed!  (i have a spare)

Oh, well.  This job is 'vertical', so I can use the newer machine, which is working well.  'Just took a bit to get it uncovered, and tomorrow (early) I must re-surface the waste/vacuum sheet.  Such is life, huh?

Lloyd

8
I JUST got some orders for some of the pyrotechnic 'plates' I make for the theme parks.

They even inquired on purchasing more material for future orders.  It looks like it might be "turning around".

Lloyd

9
Kelly,

"Boring holes vs Pockets: When boring holes much larger than the bit diameter, is there any advantage/disadvantage to the drilling with either spiral or canned method? or alternately, just cutting them as a pocket? I did the throttle bores as spiral drilled and as pockets and the tool paths seem to display very similarly."
--
I tend to pocket such holes.
--
"Roughing: I see roughing displayed in the various machine ops. Is a roughing and finish cut available in all machine ops or just 3D? For example, could I make successive cuts of increasing depth leaving say .030" of stock on a profile or pocket and then make a full depth finish cut?"
--
Roughing and finishing are available in 2.5D ops, as well.
--
"Tool Path Visibility: The documentation says you can select "Tool Path Visibility" to display either selected items or all and also that this was moved to the first item in the drawing tree for 1.0 but I can't seem to find where to toggle between selected and all objects/MOPs. Where is it?"
--
I don't know about that one.  I've not challenged it, because I use a simulator to view what the work will be like.
--
"Order of machining operations: When the gcode file is generated, will the MOPs be executed in the order the appear in the machining tree?"
--
Yes!
--
"Bitmap vs Vector file. I was reading through importing a Bitmap or image file. There are several logos and images I would like to scale and reuse on future projects. I see I can download them in about any image file or vector file. What's the vector file? It's has an .svg file extension, correct? Does it just break the link to the bitmap and imbed in the CamBam file? And which would be best to download and save for scaling and repeated use of an object generated from an image? It appears the Script function could also be a candidate for same but not sure I understand the advantage/disadvantage over the former."
--
I don't use such.  I design my parts IN CamBam.  Sorry I cannot help more.
--

Lloyd

10
Members Projects / Re: Slide rules!
« on: July 26, 2021, 00:16:16 am »
I need MINE!  The power WILL fail here (sometimes for a week or more, during 'storm season').  If the calculator batteries fail, the slide rule will do!

I've already re-practiced some use of it, and still have left to explore the log functions.

Lloyd

11
Members Projects / Re: Slide rules!
« on: July 25, 2021, 19:02:45 pm »
"Sinclair Cambridge type 2" from 1973?"

0000000000

Oh, my goodness!  I owned one (long gone).

Lloyd

12
Not the picture in 42, Dave.  I'm talking about the code shown in post #41.

Lloyd

13
"What you've done wont do anything because you have entered your values
in the comments section of the PP, that is between the {$comment} and {$endcomment}
directives."

Dave, there's a move to {$clearance} BEFORE the comment begins, and an actual toolchange AFTER the comment ends.

My take on that is that the comment is there simply to tell the operator what just happened, and what tool to mount.

Lloyd

14
Members Projects / Re: Slide rules!
« on: July 24, 2021, 23:07:48 pm »
Heh!  I never cussed mine!  They got me through college physics with no issues.

We didn't have electronic calculators, back then.  I built (from scratch) my first '4-banger' (add, subtract, multiply, divide, 8-digits) in my senior year.

Lloyd

15
Kelly,
I just wish to say that with the questions you're asking, you're going to do fine in this craft!

The fact that you know what you don't know is one of the most-valuable tools a beginner with any soft can have.

Lloyd

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