Bowden-Filament-Drive-1
Bowden Filament Drives
21/12/2016
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Rock-V3.0-Printer

Rock V3.0 3D printer

Base frame and back wall

  • The strong frames provide a rock-solid support for the print-surface and dual extruders.

Print surface

  • Different print surfaces can simply be clamped into place. (Alu, Glass, Timber, etc.)

Print bed heating

  • The print surface is heated with a 300W pad (0 to 125°C) 

Print bed levelling

  • The print surface levelling is adjusted mechanically with 3x grub-screws and secured with wing nuts. Once levelled the print surface is ready for many prints before check and possible fine trim.
  • The print surface levelling has purposely not been designed to be adjusted electronically.
    User feed-back has told us that; electronic levelling / adjusting is usually performed before each print, is way too time consuming and very annoying.
    Explanation:
    For electronic levelling the extruder tip must be equipped with a touch sensor. The extruder is driven many positions of the print surface (~16-32 or more), on each of these positions the print-surface is driven up until the extruder touch sensor makes contact. Each position is stored and when printing the print surface height-position is corrected according to the recorded data.
  • Of course, this is all not necessary if the print surface is flat and stable.

Print head

  • The print head has been designed to accommodate the very popular E3D extruders.
  • Each extruder attachment can be fine adjusted in height (+/- 5 mm). The fine height adjustment can be done while the printer is in operation and the extruder is pushing plastic out of its nozzle. This is a great advantage when 3D printing is started (first layer) and adhesion of specific plastics causes problems. Of course, when printing with one extruder only, moving the unused extruder away (up) from the hot print surface of the active extruder, thus preventing scratch damage, is of great help.
  • Speed controlled filament cooling fans directed to the extruder tips are standard.
  • White bright LED’s point to and illuminate both extruder tips / plastic extrusions.

Print head X & Y motion

  • The X & Y axis motion of the print head is supported by 6 linear bearing block & tracks (Two at the print head and 4 at the top frame front/back and left/right. These precision linear bearing blocks and tracks provide stable and accurate positioning of the two extruders. The axles are accurately driven to position via parallel timing belt assemblies.
  • The print surface is illuminated by 2 LED strips mounted on the top frame left & right .

   Draft shields

  • 3 simple hanging and interlocking draft shields are supplied with the printer kit.
    The draft shields can individually be added or removed from the printer frame.
  • Drafts from air conditioning or alike that flow over the heated print surface and hot printed object can cause accelerated cooling and print errors.
  • Certain 3D printing plastic filaments that are melted and extruded to bond with the previous printed layer, if cooled too fast may not bond correctly and cause layers detaching 
  • For better display the pictures below show the acrylic sheets with the protective paper left on