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Messages - wild.bill

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1
BenCutLaser / Re: BCL For CNC Router (OPEN)
« on: August 11, 2017, 04:47:39 AM »
Another issue with tool/cutter radius compensation is are you cutting a part - needing to cut outside of the line, or a hole where you need to cut inside the line. Then you can get into V bits where the Z height controls how wide the cut is, and that varies with the angle of the bit.

Etching images or shapes where you want to follow the center of a line is useful because that is what is missing from most CNC software, but for "CUTTING" there is a lot of good software already that addresses tool/cutter radius compensation.

For CNC etching you already have motion and speed control, what is needed is the depth of cut per pass and having a safe Z height when you want to move without cutting. These should be much easier to do and will add value to BCL.

2
General Discussion / Re: K40Whisperer
« on: August 10, 2017, 06:50:42 AM »
I am in the US and drive by an Amazon Distribution center a few times a week. I might pay a little more but I also know that if there is a problem, Amazon will take a product back without a lot of hassle.

3
General Discussion / Re: K40Whisperer
« on: August 09, 2017, 10:26:34 PM »
I don't post that often but do follow all the post and development here.

One of things that I have always liked about this forum is that everyone is always willing to help.
I know that there is a lot of work to get these software products to where they are today.

Ralph I am willing to help you test any CNC router ideas like I was helping Zax for his last release, actually getting T2 CNC support working helped my take to a better level of engraving acrylic. I have the small CNC that I use for engraving acrylic and a large CNC that I do most of the wood and aluminum work with so I can try almost anything for you.

The only problem I have now is this time of year mixed with the number of hobbies (golf, boats and car shows) I have I have only been home a day or two a week and will continue for another month. I have done almost nothing with my laser or CNC machines for quite a while. When things get back to normal I will get in touch and see where everyone's testing is and see what I can do to help. I just don't want to use any of your time until I can give something back. Also with all this K40 talk it is now on my very short list but again don't want to order it until I am actually going to have time do do something with it. Its actually sitting in my Amazon cart.

So like other I want to thank you for all the work you do and for creating this environment.

Bill

4
T2 Software Updates / Re: Updates
« on: July 23, 2017, 07:42:45 PM »
Only thing I noticed is I lost my custom buttons. Is there a way to back them up?

5
General Discussion / Re: Laser vs Mill
« on: July 23, 2017, 07:40:14 PM »
different kind of vinyl - old records not vinyl film.

6
General Discussion / Re: Laser vs Mill
« on: July 23, 2017, 07:12:08 PM »
The first thing you would need to do to use a dremel like device on the laser system would be to add Z axis. If you do a little digging through the threads here I think there are at least a half dozen different Z axis that people have added to their laser systems. I put a Banggood Z on my laser and wrote it up
http://benboxlaser.us/index.php/topic,2175.0.html. Take a look and I know you can find a bunch more.

The quick release bracket shown could be mounted on the front of the Z azis to put different devices on it. There are a bunch of mounts for putting a Dremel on a CNC machine and for most its easy to change the mounting holes to match the plate on what ever Z axis is used.

The only drawback with using the laser bed is the X - Z axis is not very stiff you you would need to make the cuts very slowly compared to a normal CNC/Mill. I have a small CNC/Mill that once had a dremel and now has the spindle and it is not as stiff as I would like so I need to do my cutting with it very slowly but it does get the job done. When I say slowly it use 60 - 80 mm/min on this small machine where on the large machine most cutting is more like 1500 mm/min.


7
General Discussion / Re: Making money
« on: July 18, 2017, 05:32:51 PM »
...
Incidentally, I'm surprised there has been such a market for the slate coasters. Who uses coasters? I don't remember the last time I used one!

I use one every day. My coffee cup sits on it every day, and my beer mug sits on it every night.
If the slate starts to get dirty or sticky a little soap and water cleans it up like new.

8
Custom Size Frames / Re: Little CNC mill
« on: July 16, 2017, 07:13:04 PM »

I will put out a few thoughts that I hope can help a little. For GRBL I have been using 1.1e configured to have X and Y limits on different pins. I set the Z height manually by placing a piece of paper on the surface and adjust height until it just stops letting me move the paper.

For raster I have only been using T2 and it has worked out well. Something I did when I was setting things up for raster and just issuing the GRBL commands and seeing that everything moved as expected. The only warning here is if you use the arrows for moving in T2 its leaves the machine in relative positioning mode. I set up two control buttons to set absolute or relative positioning modes.

With the fine bits that I am using it is a very slow process. I am often cutting at 50 - 80 mm/min. This leads to an idea for a future upgrade for Z2. It would be nice to move at the rapid feed rate when we know that we at the Z-safe height. That would make the raster a lot faster.

For vector - I will use T2 for very simple DXF files, but most of the time I use ESTLCAM to setup tool paths, export the "nc" files and then I use GrblPanel to control the machine. ESTLCAM will take SVG, DXF and STL files.

For bits I have a huge range, but I have broken my .3mm and .5mm bits. I was using a 1mm (that didn't break easily) but it was a little course for what I was trying to achieve. Most of what I an doing this week has been with a 20 deg and a 15 deg V-bit. As long as its shallow I can get some very fine cuts without the fear of breaking the bits. I still need to get some ball end bits.

With the talk in another thread about Topo maps I was reminded that I had 3D printed a topo and went looking for the STL. I loaded it into ESTLCAM and created the nc files to cut it. All I had was sharp edged 3mm bits for someting this large and a ball end would have done a much better job.


9
T2 Engraving / Re: Alarm?
« on: July 16, 2017, 06:09:34 PM »
Something to keep in mind, the Alarm comes from GRBL. When this happens T2 or any other software has no idea if the last move command was executed or not so I would never assume that you can never just continue and expect it to still be aligned with what had already been done.

10
Custom Size Frames / Re: Little CNC mill
« on: July 12, 2017, 02:52:45 PM »
I have had a few of those deep dives with mine. Once while doing aluminum I forgot to turn the spindle speed up and the force pushed every thing down deeper and deeper until the bit broke, couldn't get to the abort fast enough.

Did it with wood once because I had to fast a feed rate but aborted before anything broke.

There is a learning curve and my two machines are much different on how to set them up and what material you can cut, but that is part of the fun.

11
Custom Size Frames / Re: Little CNC mill
« on: July 12, 2017, 12:30:43 PM »
When I am engraving in acrylic I usually only cut .1mm deep into it. The picture I posted yesterday was only cut .1mm deep.

I have a 1/2" mill bit that I used to do a light cut into the waist board and then you know that there
is no skew between the bed and the head.

12
Projects / Re: Fine engraving with laser and CNC
« on: July 11, 2017, 04:29:27 PM »
I am home again for the week so I picked up testing out the CNC features some more. My original goal was to use T2 to engrave raster images into clear acrylic. I would never have expected that laser software could do the following image with a CNC machine. The image was cut using a 20deg V-bit into some scrap acrylic so the image is only 40mm high. I am sure if I was doing a larger image it would be even more refined.

And I did put a light on the edge of the acrylic to take the picture.


13
Aliexpress.com / Re: Mini CNC
« on: July 04, 2017, 06:49:19 PM »
I happen to use a Makita router at 16K,

but another thing to keep in mind is what kind of bit you are using.
A single flute bit needs to run faster than a 4 flute bit.
And for aluminum I usually use a good quality single flute bit.

14
Aliexpress.com / Re: Mini CNC
« on: July 03, 2017, 10:15:58 AM »
i don't think the spindle is fast enough or strong enough for aluminum.
i run my router at almost twice its speed when doing aluminum.

i do very much like the spindle for smaller things like engraving and fine etching. On mine i took off the pot and hooked up a pwm to 10volt board and control the spindle via grbl/t2

15
Aliexpress.com / Re: Mini CNC
« on: July 03, 2017, 07:55:55 AM »
that looks like the spindle that i use. it need a power controller for the motor.
take a look at this one https://www.amazon.com/gp/product/B01LNBOCDA/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

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