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January 21, 2020, 12:00:07 pm

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1  Support / Related Softwares / Re: Reducing Stl file size on: January 12, 2020, 17:01:17 pm
In Blender  with the Decimate-Modifier.

2  Made by CamBam / Members Machines / Re: Water cooler for my spindle on: January 01, 2020, 14:51:45 pm
There is always a difference between "what is necessary" and "what do I want to play with".
The 2.2kw chinese spindle needs 20-26gal/h or 76-95 liter/h water according to the factory specifications.
The spindle is not directly cooled, it only has a double wall filled with water. Short-term high voltages which overheat the windings cannot prevent the water cooling, this is the disadvantage of the water-cooled spindles.
The advantage is that the toxic exhaust gases that are produced when the windings burn down remain in the spindle.

Important for the bearings of every HF spindle is a minimum temperature of 20°C.
Lower temperatures put extreme stress on the bearings and warm-up does not help.

Because the temperatures in my workshop are often much lower I have a 30l storage tank with aquarium heater. In this tank is an Eheim 1048-790 pump. It creates a flow rate of 90l/h with the used hoses 10/8mm in black.
The cooling water in the tank only heats up when I work at speeds above 18000rpm. If I work for hours at 24K rpm I have a heating of 0.5°C per hour. So even if the milling machine is running all day I hardly get over 30°C.
I only use tap water, because I use black pipes there is no algae growth. Once a year I change the water.

For the cooling system I only need the tank, the pump (10W/h) and if it is cold for 2-3 hours the heating (25W/h).
This is my minimum equipment, my first spindle ran with it for 9 years. I replaced it although it was not broken. My second spindle is now running for one year on the same cooling sytem.

Everything more and electronic gadgets might make the owner happy, but doesn't really help. With a closed cooling system there is no possibility of water heating to the minimum of 20°C. I have never seen a chinese spindle that broke because the cooling is undersized, but I have seen some with bearing damage because it was used too cold at the start.

greetings and all the best for the new year
3  Support / CamBam help (General usage) / Re: Machining operation for complex part on: December 12, 2019, 15:13:55 pm

for me this is a cylinder with bore (lathe) and two flanges, which are soldered hard on both sides with silver solder.

4  Support / CamBam help (General usage) / Re: Start Point vs Machining Origin on: December 04, 2019, 13:19:42 pm
Other than that I have no idea how that point is selected.

If the starting point of the machining is not set (NAN), the starting point is always the first drawn point of the polyline.
This applies to both open and closed polylines.
When drawing basic objects such as circles, arcs or rectangles, the starting point is always at the same position no matter how the basic object is positioned on the drawing surface.
For a circle, this is the right node at 3 o'clock.
For a rectangle it is the bottom left node and for an arc it is the right node.
The starting point remains at the same node even after it has been converted to a polyline. This can be easily tested by rotating the object.
If a machining starting point is defined, the machining starts at that point.

If more than one object is in the mop, the starting points of the machining of all selected objects are started near the defined starting point.
The starting point in this case depends on the optimization mode. If "None" is selected, the start points of the basic objects apply again or the first point of the drawing.

The Machining Origin has nothing to do with the generation of toolpaths. It defines the position of the objects relative to the machine bed. If, for example, the Machining Origin in the machine control software is selected as the center of the machine table, the generated G code is aligned accordingly.

5  Support / CamBam help (General usage) / Re: Please Help !!With generating G - Code on: November 12, 2019, 16:55:11 pm
Extract the attached postprocessor and put the file into the directory "post".
C:\ProgramData\CamBam plus 1.0\post

Select the post processor in the Machining folder. The G-Code should work.

If the G-code in the file header or at the end still contains too many commands write again what must be removed.
6  Resources / Post Processors (*.cbpp) / Re: Need help on: November 08, 2019, 18:44:12 pm
beamicon 2 works with DIN/ISO G-Code. It must work with the "Default" PP.
There is a reference manual with the G and M commands.
I find it unfortunately only in German language.
If it is necessary I can call Roy Kloss or Nicolas Benezan if there is anything in English. 

7  Support / CamBam help (General usage) / Re: SINGLE LINE FONTS on: November 08, 2019, 09:11:29 am
The solution is to search for Stick Fonts
Here you can find the CamBam Stick Fonts from George Race

In this thread you can find some more links

8  Support / CamBam help (General usage) / Re: A bug in v1 rc-3 (Linux) Array Copy? on: November 07, 2019, 17:32:55 pm
When I make a series copy or polar copy, it works as expected.
It is important that the scaling is 100%=1, 110%=1.1.

I create a circle with D=10mm.
I want to copy this circle in one row 5 times, with a distance of X=20mm between center of a circle to the center of the next circle and each copy should be 10% larger then this before. The input would be 20,0,0,1.1.
In this way you can only make copies with a distance between the center of the circle to the center of the next circle.

9  FeedBack / Bug Reports / Re: [V1 - 50] Resize option bug.. I think. on: November 05, 2019, 15:01:16 pm
To enter your 3.14159 you can write 14159, then hit decimal point two times
I get a 0.14159. Then change the 0 into 3.
Also only a workaround …

10  Support / CamBam help (General usage) / Re: *** Testing Attaching an Image *** on: November 03, 2019, 15:00:19 pm

works without problems.
the url of the picture must be known.
Klick on the "insert image button"
or write the image link directly into the text.
but please, only link images that are permanently under this address. It is totally unusable if the picture is not to be found any more under this address. Then the whole article is unusable.

of course you can also create a link to a picture uploaded here.
Link to the image of frostheave

right mousebutton and choose "Copy Image Adress" or what your browser uses. Paste this address between the [IMG] tags

11  Support / CamBam help (General usage) / Re: Round hole - Plunge first - then cut sides to needed diameter? on: October 28, 2019, 13:56:42 pm
You can use a profile mop as a pocket mop. Simply enter a cutting width. The toolpaths on the photo have a spiral lead in.

12  Resources / Post Processors (*.cbpp) / Re: GRBL post processor on: October 14, 2019, 17:17:38 pm
GRBL doesn't support the drilling/pecking G-Codes natively.
Supported G-Codes in v1.1
G0, G1: Linear Motions
G2, G3: Arc and Helical Motions
G4: Dwell
G10 L2, G10 L20: Set Work Coordinate Offsets
G17, G18, G19: Plane Selection
G20, G21: Units
G28, G30: Go to Pre-Defined Position
G28.1, G30.1: Set Pre-Defined Position
G38.2: Probing
G38.3, G38.4, G38.5: Probing
G40: Cutter Radius Compensation Modes OFF (Only)
G43.1, G49: Dynamic Tool Length Offsets
G53: Move in Absolute Coordinates
G54, G55, G56, G57, G58, G59: Work Coordinate Systems
G61: Path Control Modes
G80: Motion Mode Cancel
G90, G91: Distance Modes
G91.1: Arc IJK Distance Modes
G92: Coordinate Offset
G92.1: Clear Coordinate System Offsets
G93, G94: Feedrate Modes
M0, M2, M30: Program Pause and End
M3, M4, M5: Spindle Control
M7* , M8, M9: Coolant Control
M56* : Parking Motion Override Control

Be careful, G80 is used by GRBL as "Motion mode cancel". In G code, G80 is the "Cancel canned cycle".

13  Support / CamBam help (General usage) / I'm too stupid for the wrapper. on: October 01, 2019, 23:05:51 pm
I'm trying to use the postprocessor to engrave an engraving around a cylinder.
That works too, but the result is always reversed.

Of course I can mirror the file in Cambam, but that wouldn't be the best way.
Can someone please describe to me how this can be done with the wrapper on the postprocessor without me getting a mirrored file?
In the attached archive is the postprocessor and the CamBam file.

14  FeedBack / Bug Reports / Re: CamBam V1.0 RC 1 on: September 29, 2019, 17:53:06 pm
the mac has the time-machine built into the system. Every hour an incremental backup which is then summarized after days and weeks.
Windows runs in a virtual machine, but all files are stored on the Mac so I am on the safe side.
It's just annoying when the libraries are gone.

A user just wrote me that after installing V 1.0 RC1 the lathe plugin is not installed and is missing after the installation.
I still have to check this because I only made an update of the Alpha16.

Sometimes it takes a little time for the memory to come back. The plugin is installed with version RC1, but the icon is installed by the Custom CAM Toolbar plugin.
The problem is solved

15  FeedBack / Bug Reports / Re: CamBam V1.0 RC 1 on: September 29, 2019, 14:32:19 pm
Ah, sorry about that Ralf. 
No Problem Andy, I work on a Mac and have my "time machine". I wrote it as a warning for the normal Windows user for whom a backup is often a foreign word.

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