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December 12, 2019, 03:54:23 am


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1  Support / Installation Help / Re: Problem with CamBamConfig under Linux on: December 08, 2019, 12:33:03 pm
CamBam version?

Mono libraries installed? what version?

I doubt that withoit these infos someone could help you.

Regards

Carlo D.
2  Made by CamBam / Members Machines / Re: My VFD destroyed - this is the reason on: December 06, 2019, 08:10:35 am
In critical applications, such those in automotive sensors, one old method was to put the connector not on the componed but with a little piece of wire away from the component, the piece of wire acts as a "shock absorber" for the vibrations, but the cable has to be built with vibrations in mind, plus the connector could be some industrial or even military grade ones, I've found many interesting connectors in "old" '50 military equipments sold in the "surplus" that are virtualy bullet proof, and under 10 dollars for a 7 or 8 pin connector, the downside are generally dimensions and weight, and somewhat the olive green color.

Regards

Carlo D.
3  Support / CamBam help (General usage) / Re: Trying out drawing on paper with my CNC. I can't seem to get CB to work. on: December 06, 2019, 07:58:08 am
In the past I've had the same problem, closing the polyline generated starting from an inkscape file:

I set three layers:

1) the default layer
2) a working layer
3) a store layer

process:

1)  put the original polyline (or polylines) in the "store" layer, make a copy of the polyline(s) in the "default" layer and set the hidden attribute for the store layer (You have the original work just in case but didn't bother you when working).

2) set the "default" layer as the standard layer (sorry I'm using Italian translation and didn't remember the exact term
the layer with the little green arrow on it. (new objects are created here)

3) chose the polyline(3) that enclose the areas and observe them, maybe the polyline is too big, make a copy and hid the working layer. (So now you have at least two copy of the original objects)

4) using "intersection points" somewhat is easy to find the points in which the polylines change directions abruply, so if you are lucky a long polyline could be broken in strategical points, it produce a pointlist that you have to "explode" to obtain single points.

5) select this points and the polyline and use "polyline" -> "break at points" menu item (you find "polyline submenu" in the context menu and even in Edit menu)

6) now you have the pieces that could be processed in many ways:
  a) simply join them and integrate the missing lines to obtain areas
  b) do a) and then use the ""Edit" > "Offset" to obtain a sliglty smaller area (use a negatvie offset value) to fill in a desidered way
  c) you could even repeat b) to obtain a concenttic pattern using a value for the offset near tip width to mimic a filled area.

When finished repeat for the all the area you would fill and then put the original polyline (or maybe a copy of it) in the "default" layer, and make the appropriate mops

Regards

Carlo D.
 
4  Announcements / Latest News / Re: CamBam plus V1.0 (rc-3) on: November 17, 2019, 17:25:53 pm
For the OpenfileDialog problem, something is moving, I've posted a minimal "working" example to show the behaviour as i was asked to do, crossed fingers.

Regards

Carlo D.

5  Announcements / Latest News / Re: CamBam plus V1.0 (rc-3) on: November 17, 2019, 16:10:43 pm
Speaking for Linux, the keypad behaviour is slightly "erratic", some times it behaves normally, i.e it respects the "block num" status, some times not, I haven't found why and when it appears, at least on my Devuan "Debian" machines, (two different machine, runnig the same distribution).

Some quick search I've done some time ago gave no result in such behaviour, but some time ago Mono was not so widespread, but hoping in some future investigations, as in Mono things are moving at different speeds, the part that interest Microsoft are ironed out quickly, other part are labelled "community efforts" or similar and left at the  community  "good wills" to iron them out.

Regards

Carlo D.

6  Support / CamBam help (General usage) / Re: Suggestion for Engraving on: November 10, 2019, 10:55:35 am
For some 4th axis trick, thinking in 3D I see no means of engraving on round object, curved object maybe.

your Z is moving along Z+ or - but at 90° from the surface.

if you "compensate" for the curvature, you modify the Z according to the curvature of the object, but the "engraving" is not a 90° respect to the surface, i.e. Immagine the movement of the tool as you slante by 30° the stock, the tool is moving up and down 90° related to the working plane, but the stock surface is 30° slanted, so 90 -30 = 60 or 90 +30 = 120 degree  with the real stock surface.

4th rotary axis for perfectly round object are not too difficult to implement, maybe some search on "diy rotary axis" could give you some hints.

I suspect that if you are a gunsmith you have some machinery to cut iron, so it a matter of having some ideas, for engraving the cutting forces are not too high so a belt with two pulley maybe with 10mm wide belts could suffice to make a rotary axis.

Then there are some plugin to drive apporpriately the  4th axis that temporarily replace the X or the Y motor of you machine.

I hope having been clear as english is not my mother tongue.

Regards

Carlo D.
7  Announcements / Latest News / Re: CamBam plus V1.0 (rc-3) on: November 08, 2019, 11:11:45 am
As the problem is not yet addressed in Mono, someone could make more error reports on it.

Maybe insisting some mono developer may notice the problem.

Regards

Carlo D.
8  Support / CamBam help (General usage) / Re: Linux Mint Future on: November 08, 2019, 10:41:38 am
Not to be polemic, only helpful just in case this discussion is useful for some beginners.

I doubt that Linux Mint didn't have in their "official" repositories Mono available, maybe it not simply installed as a default package, and has to be simply installed from the Linux Mint Repositories.

From what I remember about Linux Mint (having used it in the past) the packages not "Mint specific" are downloadable from the corresponding Ubuntu repositories.

And this maybe it will be a good starting point as some Mono breakage may happens in the Mono-Official packages.

In another post I have some problems with libgdiplus-6.0.4 that Andy has in the Ubuntu distribution and have resolved recompiling the package from sources changing a line of code to make it behave well with CamBam and other Mono programs. (some source modification break the icons on File Open Dialog, the problem is that this dialog is in Mono and all the Mono programs have such bug, but even if it have been reported as bug in Mono is not fixed yet).

The packages in the distribution although not in sync with the latest sources in some case are better for an average user, and maybe are more usable due to the fact that they are not "in development" like it seems to be with the Mono-Official.

Regards

Carlo D.

9  Support / CamBam help (General usage) / Re: Linux Mint Future on: November 07, 2019, 17:46:26 pm
Yes, but in the documentation of Cambam is stated that Mono is required, and I i dind't go wrong there is a good description of the steps needed to install the required libraries.

10  Support / CamBam help (General usage) / Re: 2.5D / 3D modelling ideas/tips please on: October 30, 2019, 15:04:09 pm
The form resembles a musical instrument, the method of gluing together I think is crucial for strenghtess of the finished work.

If it is an instrument, maybe see how some of theese are made especially for the joints will be better.

Regards
Carlo D.
11  Support / CamBam help (General usage) / Re: 2.5D / 3D modelling ideas/tips please on: October 30, 2019, 10:41:33 am
the main problem with pyramid is the base, "perimetral" cut across the material thickness have to be sloped by the angle resulting by the height of the pyramid.

The sides are not to difficult to calculate, but when you want to join them if you glue them side bu side you have on two opposite faces the material of the two other face showing.

If you want to glue them "by the edge" you have to calculate even for all the sides the proper slope.

In this case the dimensions are the external dimension of the object, but you have to calculate the appropriate slopes.

See the example1.cb attached file, showing a rough sheme of the base view from the bottom.

Cyan lines are the slope, I haven't checked if the slope is costant across all the length, and I suspect it is not, but I haven't the mathematical skill to do so, i suppose that a costant slope could be a good starting point, and then some sandaing could to the perfect contact, or maybe using some bicomponent glue could compensate for some misalignement.

If the pyramid has to be painted, the first approach will be better as you have to calculate only the appropriate dimensione of the 3 or four triangles and then seal the thicness parts (I suppose you want to cut plywood)

Regards

Carlo D.
12  Announcements / Latest News / Re: CamBam plus V1.0 (rc-3) on: October 29, 2019, 11:32:15 am
I have found the issue with debian just in case someone might have the problem.

At least for Debian 9  libgdiplus bump from version 5.6.1 to 6.0.4 so it is not feasible the downgrading, the version are too far away.

In the meantime no upgrade was available, the error is put in a community effort, maybe 10bulls could make some more investigations and maybe make an error report.

Regards

Carlo D.
13  Made by CamBam / Members Machines / Re: Questions about practical issues while working in a workshop on: October 26, 2019, 11:24:40 am
My two cents.

For vacuum tables, from my searching (I have your problem too) there are two types of tables:

with valvles that close the unused holes, mostly commercial tables have such an arrangements, but I don't know how they are made and if they are reproducible on DIY tables.

without valvles, and generally the problem is resolved using shets of material to close the unused holes.

but wait here if there are some professional users that may have some more "professional" hints.

Regards

Carlo D.

14  FeedBack / Feature Requests / Re: Multiple "tiled" page Print function in 1.0 on: October 24, 2019, 11:54:28 am
A while agothere were an UNix program proted also to windows, where you could print a Postscript File (even a PDF if I didn't go wrong) with some "registry marks" on the side of the paper permitting to gluing together, several sheet to make a bigger sheet. I have used it to make 70x100 cm posters out of A3 paper.

It debian the  package is called "poster" and there is also a "pdfposter" package.


This is an article of a simila approach with some commercial programs.

https://www.trishtech.com/2014/04/print-large-poster-using-small-printer/

Hope it will be useful.

Regards

Carlo D,
15  Announcements / Latest News / Re: CamBam plus V1.0 (rc-3) on: October 22, 2019, 16:31:52 pm
Thanks Andy, I submitted a bug report on GitHUb page using your informations.


OpenFileDialog, buttons icons are broken #17493

https://github.com/mono/mono/issues/17493

Update
unfortunately downgrading is not possible at least for debian 9, sources from stable-stretch and vs-stable-stretch seems to be equal and not holding 6.0.2 as possible version.


Regards

Carlo D.

@Dragonfly The level is not too high, is only a matter of investigation, in GitHub is easy to make some search using patterns in the source tree and when you have a clue of what is going wrong, some search and some "brain glue" may help you.

Bug reports are the better if they have some version in it, so the "programmers" could have a hint on "when" the things were broken, and maybe a simple "diff" with two version will find the culprit, almost every time, if you have some fortune, or if you have not !fortune (programmers use ! to indicate not negation so !fortune is misfortune or as we call it in italian slang, from noth to south  "sfiga" - "jella").

Regards

Carlo D.
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