eBay Chinese CO2 Laser Cutter & Engraver Unboxing Part 2

In this episode of DIY3DTech.com we will finish up the unboxing of the eBay Chinese CO2 Laser Cutter & Engraver and discuss next steps regard some of the modifications we would like to make especially to increase the cutting of the unit over it abnormally small area.

Also check our detailed image gallery at: diy3dtech.com/ebay-chinese-co2-laser-cutter-engraver/



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eBay Chinese CO2 Laser Cutter & Engraver Unboxing Part 1

In this episode we will unbox the new eBay Chinese CO2 Laser Cutter & Engraver which we just got in and take at detailed look at its condition, dimensions of the unit along with some general observations.  We are making this video to document some of the questions we were looking for answers too when we bought this unit and couldn’t on the new or YouTube.  So if your thinking about buying one of these gems from far east, watching this video is for you as I hope to answer many questions.  This will also be a two part episode because there are a number of things worth cover beyond just the uboxing.

Also check our detailed image gallery at: diy3dtech.com/ebay-chinese-co2-laser-cutter-engraver/



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3D Printer Leveling Stand Made from Maker Rail!

In this episode we will build a printer stand to level our 3D printer.  The logic here is that while leveling the bed to the print head is a good thing, leveling it period (or in reference to gravity) is even better.  As remember two things, the first is that the plastic we are pushing out of the hot end of the 3D printer is a semi liquid and will want to run a small bit or maybe better put, deform.  This can lead to poor print quality as even if it is just wee little it bit, over the layers and layers of plastic which are layed  down this will add up.  The second is being a bit off can cause the print head to “grab” the work piece and pull it  off the bed.   Remember you are working with a small amount of space here so being as level as possible is good thing!

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Monster QU-BD TwoUp Modifications!

 

 

As in this episode we will be cover the many modifications made to the QU-BD TwoUp DIY 3D printer. As we have re done the The Y, X and Z Axis as well as have added bed leveling too Whew!

Here are some of the Thingiverse Links:
Belt Holders: www.thingiverse.com/thing:1095181
Spring Caps: www.thingiverse.com/thing:1079696
Gantry: www.thingiverse.com/thing:952796
Y Gantry:www.thingiverse.com/thing:212989
Z Axis: www.thingiverse.com/thing:289966

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2 Watt Laser Cutter and Engraver Project Part 9 – Mounting the Hardware

 

In this episode we mount the end-stops and discuss some modifications we made to the original design we found on Openbuilds.com as well as discuss the new laser (405 nm 500mW) unit as we fried the diode in the 2Watt unit when we where working on the driver board.  It just to show that laser diodes are very picky!  Also if you are interested in this laser, we have put a link below:

by - [-]
Rank/Rating: -/-
Price: -

 

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QU-BD Y Axis Belt Holder with #6 Nut Slots

This is a remix of a design on Thingiverse for the QU-BD OneUp and TwoUp DIY 3D printer to hold the Y Axis belt from slipping. In this design we have added recessed openings to receive #6 nuts and we highly recommend adding this build to your QU-BD OneUp or TwoUp printer to prevent the belt from slipping during fast rapid infills of the Y Axis.

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1.5 Inch Feet for 0.25 Inch Round Bolt Heads

Here we have added version of the 1.5″ feet for use with 1/4″ 20 turn round (dia=10.7mm / height=2.7) and held in place with something JB Weld 15minute Epoxy

 

The Hillman Group 43602 1/4-20 x 1-3/4-Inch Flat Head Socket Cap Screw, 8-Pack

by The Hillman Group [The Hillman Group]
Rank/Rating: 1878413/-
Price: $13.51

J-B Weld 8276 KwikWeld Quick Setting Steel Reinforced Epoxy - 2 oz.

by J-B Weld [J-B Weld]
Rank/Rating: 358/-
Price: $3.80

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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.

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QU-BD TwoUp Bed Leveling Project Part -1

In this episode we start the build of the self-leveling servo & switch combo for the QU-BD TwoUp DIY 3D printer we built a while back.  Our hope is this will improve the quality of the prints our prints by  adjusting for the level of the QU-BD TwoUp bed.  We also have listed the parts below we got from Amazon.

Parts List:

Micro Switch: amzn.to/1Kpdt7S
Servo: amzn.to/1Kpdwkc
M2 Screws: amzn.to/1LMTpBI

 

7.5-Gram DS75 Digital Sub-Micro Helicopter Servo

by E-flite [E-flite]
Rank/Rating: 1060971/-
Price: -

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