Best way to do this?

I want to make a Collett stand for a set of collets and I intend to use a block of wood.
I need to put 12 holes in it that are tapered The top of the taper is 20mm and the bottom is 15mm. The holes to be 24mm deep.
I would like to use an endmill with a flat bottom, if possible.
If I can design one hole I can then tile the others where needed.
I was thinking maybe there is some function that I am not aware of for doing this.
I found this video that shows exactly what I need, but maybe Estlcam has an easier way?

Create an stl of a block with your tapered hole in it and a dxf of a circle with the starting diameter.

Open the STL in estlcam and use the dxf as a custom mask so estlcam cam will only generate the hole tool path not the whole block.

I can make an STL file no worries. I don’t understand the custom mask bit, can you please explain a little more.

I have made an STL with one hole.

How do I use it to make 12 holes the same?

I do want to do the same in V12,070A, but there is a weard thing happening.
I used this mask

this stl (ghosted view)

these settings

and this happens. see the rectangeler shape

I suppose there is a failure in the program

I have never seen anything about masking, so I am in the dark about that and how to go about it.
I found out today that my CorelDraw 12 crashes in Windows 11 when I try to export a DFX, but no problems when exporting a PLT.
Also any other graphic output through CorelDraw crashes the system as well. Works perfectly in Windows 10.
Another problem I have on two different computers using Windows 11, the screens go spastic for several minutes for some reason (I am starting to hate Windows 11)
I have been using PLT files in Estlcam for several years now, no problems at all using them.
So I am guessing that I will have to make my file with all 12 holes in place and make a corresponding STL file and then try and figure out how to load them both into Estlcam and make the NC file.

I opend the stl in estlcam, selected freemachining, in the window 3d machining selected workspace “mask” then you can select the dxf or in your case the plt

My advice, make sure to read the help with each setting.
good luck

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Thanks for that, I will have a play.

I have had a play and found a few obstacles that I feel I have overcome.
I decided that the easiest way was to produce a single hole file with the origin at the centre. That way I can mark out the layout with a pencil on the block of wood and position the centre of the file on each mark in turn.
Works fine on the screen, tomorrow in daylight I will have a go for real (too cold out in the workshop tonight)

I see you use linear machining I use waterlining. unfortunately there is no helical that would be best

Was the helical v11 Solid of Revolution a dead end - Having problem generating smooth gcode - #30 by dalrun? I’ve used it to do a series of tapered holes using X,Y commands to shift the origin to the center of each hole and I’m thinking v12 macros can make that process easier.

I will try it both ways so I can learn a bit more. Yes I agree, helical would be great.

Can you work on a macro Dave, if you have time. it would be really nice if one was available.
A single hole with a centre origin would probably be the best option as it would have universal uses. The need to have parametric settings for hole sizes and depth would be a bonus too.

I don’t think there is a way to run the program multiple times from a single macro. My thought is four macros, a right, left, front and back. To shift the spindle and origin to the right by 16mm and rerun the program the right macro would contain 3 or 4 lines: (xy,) x16, x=0 and run. The xy is harmless, but only needed if program end is set to above last object instead of at/above origin. This is true even if custom program end text and the corresponding G-code ends with a G00 x0 y0 line - presumably a v12 bug.

It will be interesting to see what comes of this, certainly an interesting subject with lots to learn and improve the software maybe.

I tried an experiment today to try and overcome the problem with Windows 11,
I installed a virtual machine and loaded it with Windows 10 and CorelDraw 12.
It worked fine and now I can use CorelDraw on my Windows 11 computer.
I have a 2T USB drive that I can share between Windows 11 and Windows 10 on the same machine, so that solves another problem.

I have another version now to try out and will be doing that in a few minutes to see what the results are like.

I tried out both linear and waterline and waterline is by far the best result. Both take about the same time, but the finish of waterline is pretty good while linear is missing some detail.

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I don’t think Mask is the issue. I tried all sorts of masks and could not get Estlcam to make paths for anything but the unmasked areas. I don’t know squat about STL’s, but where did that straight walled hole (upper right) come from? Have you tired masking all but the good holes (bottom left)?

…oh yeah, another loss in v12 is the ability to save 3D project files (handy for future reference and edits).

No I did not try to make anything from the unmasked areas.
No i did not try anything else
I can send you the stl and the mask so you can try yourself
I find it strange that a part of the mask has the vertical walls