Tag: Probotix

CNC Project – Routing a Plant Coaster on a CNC Router Table!

Please visit www.DIY3DTech.com for more information on this and many other projects! As in this episode we will be looking CNC-ing a Plant coaster on the CNC and it turned out VERY cool! Check it out!

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CNC Projects – GRBL Followup and Switch to Linux!

Please visit www.DIY3DTech.com for more information on this and many other projects! As in this episode we will be following up the issue I had with GRBL and it disconnecting and my switch to Linux. However after producing the video, Winston Moy produced the video “Shapeoko 3 vs. X-Carve (& EMI Disconnect Resolution)” at www.youtube.com/watch?v=71AQBgDkAz4 which discusses an EMI disconnect issue which sounds very much like what was happening to me. While I do not have a DC spindle, I am wondering if could be something else. However as discussed in this video, the switch to link seems to have fixed the issue. So just wanted to share this with you in case you are having the same issue.
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Build Your Own CNC Machine

by James Floyd Kelly [Apress]
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Price: CDN$ 32.34

CNC Tips and Tricks – Cutting Extruded Polystyrene Sheets

So in this episode we are going to look at machining sheets of extruded polystyrene sheets we bought a  couple years back.  This was very cheap verses that of acrylic, however machining is a bit harder as the plastic wants to melt rather than cut.  So what we did was:

1. Use a 1/8″ 2 flute end mill (amzn.to/1LMWEJy)

2. Kicked the speed up to 100 Inches per minute

3. Slowed the spindle down to only 1/3 speed using a speed controller(amzn.to/1GUViXB)

 

A. Polystyrene

 is a synthetic aromatic polymer made from the monomer styrene. Polystyrene can be solid or foamed. General purpose polystyrene is clear, hard, and rather brittle. It is an inexpensive resin per unit weight. Polystyrene is one of the most widely used plastics, the scale of its production being several billion kilograms per year. Polystyrene can be naturally transparent, but can be colored with colorants.

As a thermoplastic polymer, polystyrene is in a solid (glassy) state at room temperature but flows if heated above about 100 °C, its glass transition temperature. It becomes rigid again when cooled. This temperature behavior is exploited for extrusion, and also for molding and vacuum forming, since it can be cast into molds with fine detail.

B. Polystyrene features

  •  Excellent light transmittance.
  •  High mechanical strength.
  •  Weather proof
  •  Non-toxic and chemical resistant.
  •  Easily be processed

C. Polystyrene applications

  •  Advertisement: blow molding board, CNC engraving materials, Laser engraving materials, sign board,  light box,  window, logo and mark, etc.
  •  Furniture: office furniture, cabinet, window, etc.
  •  Finishing Material: decorative sheets, storage racks, room segments, etc.

Using a Laser to Recycle a Cereal Box Into a Stencil!

In this episode we will use our CNC mounted 2 Watt Laser Diode cutter to recycle a stencil out of an old cereal box! I have this is a great tool for recycle and reuse of things that would normally end up in the trash.  How use care when cutting due to both fumes (which could be toxic) and reflections from shinny surfaces so use care when cutting something new having proper ventilation as wearing the correct safety glasses for your laser!

Also if you want to try this yourself, check out the link below for a pre-built unit: 

1500mW Desktop DIY Laser Engraver Engraving Machine Picture CNC Printer

by Mega Save [Mega Save]
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2 Watt Laser Cutter and Engraver Project Part 5 – Building the X Gantry!

In this episode we will add the X Gantry we designed for the 2 watt laser cutter and engraver build project.  As the build mature we will place all of the additional STLs up on Thingiverse as well build up an additional BOM (Bill of Materials) for the project too!  So stay turned and see how the build turns out!  Also if your interested in jump starting your build of a similar device, check out the link below!

1500mW Desktop DIY Laser Engraver Engraving Machine Picture CNC Printer

by Mega Save [Mega Save]
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Vectric Cut2D Post Processor for Laser Cutter

 

In this episode, we will look how to a create a post processor file for Vectric Cut 2D to drive the laser cutter on our Probotix Fireball v90.  This should also work for all GRBL based machines like the Shapeoko or the XCrave too.  Below is the code for the millimeter based post processor file:

 

500MW DIY laser Engraver engraving machine Picture CNC Printer 17cm X 22cm

by Megasave [Mega Save]
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Dwell Issue with GRBL Using a Laser

Appears there is a delay in GRBL (v0.9) with the issue of the M03 spindle direction command GRBL will delay its movement to allow time for the spindle to spin down, reverse and spin back up.  So instead of using M03/M04 for rapids, we have switched to using PWM (Pulse Width Modulation) using S0 to set to the lowest level (basically off) and S1000 for full power.

Arduino Ultimate Starter Kit

by Vilros [Viklro]
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Price: CDN$ 150.45

Probotix Fireball v90 with 2Watt Laser!

In this episode we will fire up the Probotix Fireball v90 with the 2 Watt laser and cut some stuff. We are using the gcode from the J-Tech Photonic Inkscape plug in bu the machine seems to be waiting for several minutes after reach the start position in line 12. Below is the Gcode:

500MW DIY laser Engraver engraving machine Picture CNC Printer 17cm X 22cm

by Megasave [Mega Save]
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Spindle and Laser Control for CNC Router using Gcode

In this episode we will look at using a dual relay board (amzn.to/1MeJCmN) connected to the GRBL controller to on and off either a spindle or small laser attached to the mill (we will be adding a 2 watt laser in another episode).  This is is current using pin 13 which is set control spindle direction as in stand PWM mode pin 12 for spindle enable does not respond to gcode commands and requires a change in the configuration.f and a recompile with upload.  I got the below table from (www.shapeoko.com/forum/viewtopic.php?f=3&t=5803) and it is a good reference if you want to make changes.

 

Disabling VARIABLE_SPINDLE will revert Grbl to the old pin layout, where spindle enable is on D12 and direction on D13. With it enabled, spindle enable/PWM is on D11 and direction on D13.

EDIT: Here’s a chart to make it a bit clearer.

VARIABLE_SPINDLE enabled:
D11 = Spindle enable/PWM speed
D12 = Z-limit
D13 = Spindle direction

VARIABLE_SPINDLE disabled:
D11 = Z-limit
D12 = Spindle enable (on/off only)
D13 = Spindle direction

VARIABLE_SPINDLE and USE_SPINDLE_DIR_AS_ENABLE_PIN both enabled:
D11 = Spindle PWM speed only
D12 = Z-limit
D13 = Spindle enable (on/off only)