Search found 186 matches

by msimpson
Thu Nov 28, 2019 12:28 am
Forum: General CNC
Topic: Drag Knife Section
Replies: 2
Views: 143

Re: Drag Knife Section

The box knife is a little more difficult to get things correct because of the large offset. I recommend starting with the smaller roland knife. I'm just finishing up a couple new tool holders one for the roland style and the other for the box knife. I will be mounting each on its own Quick Change Z ...
by msimpson
Tue Nov 26, 2019 5:23 pm
Forum: General CNC
Topic: Drag Knife Section
Replies: 2
Views: 143

Drag Knife Section

I started a new area on the web site where I show how I setup and use a series of drag knives.
https://www.kronosrobotics.com/using-a-dragknife
by msimpson
Wed Nov 06, 2019 10:03 pm
Forum: General CNC
Topic: VFD Notes
Replies: 0
Views: 97

VFD Notes

I thought I would post all the notes I have on my Huanyang VFD. Please note that these notes apply to the Type 1 (genuine) VFD. Please understand that these notes as well as my VFD introduction listed here: https://www.kronosrobotics.com/spindle-introduction Is what I used to get my VFDs up and runn...
by msimpson
Mon Nov 04, 2019 10:01 pm
Forum: General CNC
Topic: CNC Rotary Plasma Experiments
Replies: 3
Views: 134

Re: CNC Rotary Plasma Experiments

Yep that is what I did. All CNC machines can do that. I did have to change some settings in mach3 to get the travel to match the circumference I needed to cut. Then all you have to do is layout what you want to carve in a rectangle that matches where you want to cut. There are several ways to do thi...
by msimpson
Fri Nov 01, 2019 4:59 pm
Forum: General CNC
Topic: CNC Rotary Plasma Experiments
Replies: 3
Views: 134

CNC Rotary Plasma Experiments

I decided to do some experiments with my rotary drive and my plasma CNC.

by msimpson
Fri Oct 11, 2019 9:23 am
Forum: General CNC
Topic: No Weld Scrap Metal Fire Pit Ring
Replies: 0
Views: 125

No Weld Scrap Metal Fire Pit Ring

Here is a scrap metal fire pit ring that I cobbled together.


The write up can be found here:
http://www.kronosrobotics.com/no-weld-firepit
by msimpson
Thu Oct 10, 2019 3:15 pm
Forum: General CNC
Topic: CNC Pyrography Experiments
Replies: 4
Views: 265

Re: CNC Pyrography Experiments

The hot end is still continuing to evolve. Here I have added a small fan to keep the terminal blocks cooler.
_MG_6515.jpg
I have been able to get some good shading results on MDF.
_MG_6516.jpg
by msimpson
Thu Oct 03, 2019 10:05 am
Forum: General CNC
Topic: CNC Pyrography Experiments
Replies: 4
Views: 265

Re: CNC Pyrography Experiments

The controller was built from parts I got from Amazon. It consists of the following: 12V 30Amp power supply - $20 20Amp Motor Controller - $8 Dual Display Volt/Amp Meter - $13 Power Source for Display (needs to be isolated) - $5 12V 30Amp Relay - $10 Small Fan Power Cord Other wires and hardware Whi...
by msimpson
Wed Oct 02, 2019 10:26 pm
Forum: General CNC
Topic: CNC Pyrography Experiments
Replies: 4
Views: 265

CNC Pyrography Experiments

I have been doing some experiments with some custom pyrography components that I built.

See the first experiment here:
by msimpson
Thu Sep 26, 2019 10:12 pm
Forum: General
Topic: KReduCNC
Replies: 5
Views: 1383

Re: KReduCNC

If you are talking about the KRMx02 Y beams (8020 extrusion), I recommend using a guide block to ensure the holes are drilled correctly. You can also enlarge the holes a little to give you more adjustability. As for the large risers, you can purchase them pre-drilled from 8020. There are no holes in...
by msimpson
Fri Sep 20, 2019 3:05 pm
Forum: General CNC
Topic: Finger Jig Experiments
Replies: 6
Views: 298

Re: Finger Jig Experiments

How Well Does it Work? I have already made several frames, and the fixture works perfect. I had an issue where two of my sides were slightly thicker than the original stock I started with. The meant that cuts on the the originals had to be made about .03" deeper. _MG_6308.jpg I placed the cut part ...
by msimpson
Fri Sep 20, 2019 2:56 pm
Forum: General CNC
Topic: Finger Jig Experiments
Replies: 6
Views: 298

Re: Finger Jig Experiments

New Upper Clamp The upper clamp works well enough, but it is a pain to have to slide it out of the way when setting up the stock. I cut a piece of 1-1/2" x 1/4" x 4-1/4" aluminum bar and mounted an even larger toggle clamp to it. _MG_6310.jpg I left the rubber pad on the clamp and adjusted it so th...
by msimpson
Fri Sep 20, 2019 1:13 pm
Forum: General CNC
Topic: Finger Jig Experiments
Replies: 6
Views: 298

Re: Finger Jig Experiments

New Lower Clamp The problem with the lower Festool clamp is that it was hard to reach and was finicky to get the correct tension on the stock. I decided to go with a toggle clamp attached to the end of a piece of 1-1/2" x 1/4" x 8-1/2" aluminum bar stock. Two holes were added to attach some 5/16" c...
by msimpson
Fri Sep 20, 2019 12:36 pm
Forum: General CNC
Topic: Finger Jig Experiments
Replies: 6
Views: 298

Re: Finger Jig Experiments

Original Clamps The lower clamp is a twist type Festool clamp. It fits the 15 series extrusion perfectly. _MG_6291.jpg The lower clamp is only meant to hold the stock loosely so that the spacer block can help you set the stock to 1" above the extrusion, as shown here. _MG_6293.jpg I am using a Fest...
by msimpson
Fri Sep 20, 2019 11:38 am
Forum: General CNC
Topic: Finger Jig Experiments
Replies: 6
Views: 298

Re: Finger Jig Experiments

Please note that I used supplies that I had on hand so some of the parts may have some extra holes. Lets start with the table top: _MG_6281.jpg Its a piece of scrap 3/4" birtch plywood cut to 20-1/4" x 18". The base sits on the sides of the frame and is secured by four studs previously installed on ...
by msimpson
Fri Sep 20, 2019 10:47 am
Forum: General CNC
Topic: Finger Jig Experiments
Replies: 6
Views: 298

Re: Finger Jig Experiments

While this fixture is still undergoing changes, I will take you through some of the iterations. This was the first pass at the fixture: Image1.jpg It worked, but had some issues. The first was the stock faced away from me, so it was difficult to get the stock set properly. Also since it sits on my p...
by msimpson
Fri Sep 20, 2019 10:27 am
Forum: General CNC
Topic: Finger Jig Experiments
Replies: 6
Views: 298

Finger Jig Experiments

I was in the need of some finger joints, and decided to see if I could make a fixture for my CNCCS builds. I have done something similar with the KRMx02 in the past with a removable section in the table, but could not use it as, the KRMx02 is currently undergoing some conversions. Here is what I cam...
by msimpson
Fri Aug 16, 2019 5:13 pm
Forum: General CNC
Topic: Downdraft welding table
Replies: 0
Views: 174

Downdraft welding table

I needed to do some down and dirty flux core welds for a project I am working on, but it was raining, so I couldn't do them outside. My CNCCS plasma built is 100% downdraft venting outside so I through this together: _MG_5939.jpg Its simply a 12" x 12" piece of 16 Gauge steel sitting on the slats on...
by msimpson
Sun Apr 28, 2019 1:09 pm
Forum: General CNC
Topic: My first Voice Over Video
Replies: 7
Views: 795

Re: My first Voice Over Video

Most of the time the fence is in place in case it snags. And it has a few times. That's more of a problem on the large drill press. On this little one it is so under powered. If it catches, it will just stall.
by msimpson
Sat Apr 27, 2019 11:52 am
Forum: General CNC
Topic: My first Voice Over Video
Replies: 7
Views: 795

Re: My first Voice Over Video

Honestly, I have no interest in becoming a youtuber. That can be a full time job in its self. I just want to take the videos to the next level. I take a lot of pictures and videos as I build things and experiment. Even if I don't intend on making those experiments public. (Some are complete failures...
by msimpson
Fri Apr 26, 2019 9:29 pm
Forum: General CNC
Topic: My first Voice Over Video
Replies: 7
Views: 795

Re: My first Voice Over Video

Back in my early years I did a lot of stage acting. On the stage everything is exaggerated. I sounds like you have to do that with voice acting. I have a lot to learn doing this kind of thing. I'm sure things will get better as I do more. I just got the correct microphones/mounts/interfaces to get t...
by msimpson
Thu Apr 25, 2019 1:02 am
Forum: General CNC
Topic: My first Voice Over Video
Replies: 7
Views: 795

Re: My first Voice Over Video

Ok,getting things together.

Better microphone and a little more experience.

by msimpson
Tue Apr 23, 2019 3:20 pm
Forum: General CNC
Topic: My first Voice Over Video
Replies: 7
Views: 795

My first Voice Over Video

I want to start adding voice overs to my videos. Here is my very first attempt.



I have to tell you, it looks a lot easier than it is. It is going to take me a while to get into the groove.
by msimpson
Fri Mar 01, 2019 6:35 pm
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Re: Harmonic Rotary Drive

I just started my harmonic rotary drive write-up. Its going to take me a while as I don't want to stray to far from the plasma books I am working on. Also I dont want to commit to any electronic parts until I have a chance to do some more testing on both the KRMx02 and CNCCS. I did create an 8020, 1...
by msimpson
Sat Feb 23, 2019 11:15 pm
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Re: Harmonic Rotary Drive

I will be starting a web blog on the harmonic drive after I get a couple more chapters on the CNCCS Plasma table completed ( couple days). I will post links to all the components I will be using.

Note that this will be for the CNCCS as, the write-up for the KRMx02 will be a more involved.
by msimpson
Thu Feb 21, 2019 11:04 pm
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Re: Harmonic Rotary Drive

@mbonadio
You can not use the driver you linked to as it does not support our 48v power supply.
by msimpson
Thu Feb 21, 2019 10:56 pm
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Re: Harmonic Rotary Drive

I got my K12-100 4 jaw chuck to day. _MG_2595.jpg Honestly I doubt I will ever remove it as it can still hold round stock but gives me a much better way of holding square stock. Build 3 of the CNC Construction Set is now undergoing the plasma upgrades so all my milling will be done on this machine. ...
by msimpson
Mon Feb 18, 2019 2:03 pm
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Re: Harmonic Rotary Drive

KRMx02 For the KRMx02 you can swap out one of the drives but in order to have full axis to all drives you will need a driver and breakout board and a way to interface it to your PC. I doubt you have a second parallel port so unless you want to add a PCIe card to your PC, you will have to look-in to...
by msimpson
Wed Feb 06, 2019 9:29 pm
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Re: Harmonic Rotary Drive

I will probably look at doing some milling of aluminum angle and square on the KRMx02 or CNC Construction Set. You can plasma cut aluminum, but the finish wont be as good. For plasma, I only need to support the part by one end. For milling both ends will need to be supported.
by msimpson
Wed Feb 06, 2019 9:26 pm
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Re: Harmonic Rotary Drive

Heavens no, manual gcode is only good for simple things like my breakin loops. For plasma, Sheetcam is a must. Sheetcam has all the plasma provisions needed. Even if I have to run two sperate jobs, it still beats removing the part and reinstalling it.
by msimpson
Wed Feb 06, 2019 11:43 am
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Re: Harmonic Rotary Drive

I have been playing with rotaries for a little while. I have tried a couple that used worm gears, and one of those 6:1 belt driven drives. The worm gear ones just have too much backlash. The belt driven ones have no backlash, but lack the holding power for any serious machining. One area I plan on p...
by msimpson
Wed Feb 06, 2019 1:24 am
Forum: General CNC
Topic: Harmonic Rotary Drive
Replies: 15
Views: 1535

Harmonic Rotary Drive

I recently purchased a harmonic rotary drive. _MG_2404.jpg I paid $430 delivered. It has a 50:1 reduction and is rock solid. So far I have been very happy with it. I did some runout tests here: l_gIWiH4QGU I purchased from Amazon here: https://www.amazon.com/gp/product/B07B2SL9SD/ref=as_li_tl?ie=UTF...
by msimpson
Mon Jan 07, 2019 4:04 pm
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

No. The design is pretty much set. Chaining the size of any axis would require you to resize all components running that axis. IE All Gantry components, frame. In addition you may also have stand issues. Also the design is rigid for the x size used, increasing the span of the gantry will result in l...
by msimpson
Mon Oct 22, 2018 4:06 pm
Forum: General CNC
Topic: 3d printer conversion
Replies: 1
Views: 445

Re: 3d printer conversion

I experimented with this in the early days of the KRMx02. In reality while you can turn any CNC machine into a 3D printer and get them to work. However 3D printers are designed with no load in mind and with fast acceleration and run speeds. Heavy routing and milling machines are designed for heavy l...
by msimpson
Mon Sep 17, 2018 8:22 pm
Forum: General
Topic: KReduCNC
Replies: 5
Views: 1383

Re: KReduCNC

The overall dimensions are about 28" wide and 40" long. I would say it probably weighs about 100lbs. Would be very easy to move with two people. I have casters on mine, so its very movable within the shop. But with stairs you will need some help. Depending on what you have I would say it will cost s...
by msimpson
Sun Sep 16, 2018 9:58 pm
Forum: General
Topic: KReduCNC
Replies: 5
Views: 1383

Re: KReduCNC

What I have on the KReduCNC is up on the website. I probably wont be doing much more with that build anytime in the near future. If you dont have any of the parts, the KReduCNC will cost you between $800 and $1000 to build. You might want to look into my CNC Construction Set machine. Its size is a l...
by msimpson
Fri Sep 14, 2018 11:59 am
Forum: Forum Registration
Topic: Forum Registry Procedures
Replies: 3
Views: 27114

Re: Forum Registry Procedures

There are no private KRmx01 forums. If you need some help with that build, you need to go to the CNCZone.
by msimpson
Wed Aug 08, 2018 10:34 am
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

Another status update.

Volume 1: Frame and Carriages - Complete
Volume 2: ACME Drive Components - Complete
Volume 3: Basic Electrical Hookup - In progress
by msimpson
Fri Jun 15, 2018 11:03 am
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

Im just about finished with Volume 1 of the CNC Construction set, for anyone interested in joining my beta build I still have a couple slots open.
by msimpson
Sun May 27, 2018 10:24 am
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

It may be possible for 8020 to also make available all the carriage and other plates with all the holes drilled. This will only be an option as it will be cheaper to make your own, especially if you make them out of something other than aluminum.
by msimpson
Sat May 26, 2018 2:26 pm
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

I suspect the machine can be built for less than $1000, Not including the plasma cutter. The Everlast 50S plasma cutter is about $850. Some times I have seen it cheaper. You could also use the 60S I suspect the mounts and hookup will be the same. The cost of the machine is still a little up in the a...
by msimpson
Fri May 25, 2018 10:30 pm
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

Things are moving quickly on this. In just a couple hours, I have 3 beta builders. I am willing to take the first 10-15 who want to build along with me. This is going to be a fun build so come along and join in.

I have set up the CNC Construction Set forum for your feedback and suggestions.
by msimpson
Fri May 25, 2018 11:45 am
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

No, I would love to get a couple beta builders out there. I would be willing to supply you with my material as it is completed, (rough, unedited versions) totally at my cost in exchange for feed back. I will start up a new section in the forums devoted to the build. We can use this as our exchange m...
by msimpson
Thu May 24, 2018 11:12 pm
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

I have been so pleased with this machine, that I am moving forward with the books.
by msimpson
Thu May 24, 2018 10:50 am
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

I changed the pen-down event in SheetCam from a single probe to a dual probe action. This allows me to do an initial probe from 10IPM to 50IPM. I then raise the head about 1/8" and do a slower probe at 5IPM. And while a little slower, results in a much more accurate Z reference. This will allow me t...
by msimpson
Wed May 23, 2018 11:40 pm
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

My very fist floating head cut.
by msimpson
Wed May 23, 2018 12:18 pm
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

I have completed the first design of the floating head Z carriage.
_MG_0274.jpg
I say first design because I will probably tweak it a little. For instance I don't like the long screw that trips the switch.

Here it is in operation:
by msimpson
Sat May 19, 2018 5:23 pm
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

First, I am going to design and build a third Z carriage that has a floating head and no THC. I have found this the best for cutting features in steel angle and steel bar. I have been so happy with the build that I am thinking of starting the book series. My idea is the following. Workbook 1 This wi...
by msimpson
Sat May 19, 2018 12:27 am
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

Re: CNC Construction Set V2

The key to the new Z axis is the improved X carriage. I started with a 1000mm rail and cut it in half. 5-1/4" of the rail support is removed from each half. This allows me to create a simpler motor and bearing mount system.
_MG_0226.jpg
by msimpson
Sat May 19, 2018 12:21 am
Forum: General CNC
Topic: CNC Construction Set V2
Replies: 18
Views: 2398

CNC Construction Set V2

I have rebuilt the X axis carriage and the whole Z axis. At this point I am very happy with the machine. Spindle on the new Z axis _MG_0257.jpg I have suspended the power cable for the router. A better option would be to put a very short cord on the router then run a cord through the E-chain. I am h...