BobsCNC RP9V2 Assembly Instructions Manual Download Page 6 | Manualshive

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5. Insert the 4 extruder wires through the extruder mount from the same side as the
bearings through the wire slot as shown.
6. Place the extruder through the extruder plywood mount.
7. Pull the wires through and re-coil them to keep them out of the way and undamaged.

8. Install the extruder lock as shown. The extruder lock should have a tight fit when
sliding onto the aluminum. It may need to be sanded thinner for easer assembly fit.
9. Install the extruder top mount.

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Summary of Contents for RP9V2

Page 1: ...RP9V2 Assembly Instructions ...

Page 2: ...ng The String Drive 26 Tying the knots Uni knot 27 X string Drive 27 Y String Drive 29 Adding the Extruder Driver 31 Build Platform Assembly 33 Connecting the Controller and Extruder Fan 34 Adding the Extruder Fan 34 Ramps1 4 Connections 34 Wire Routing With Nylon Ties 35 Filament Spool Holder 36 Initial Controller Setup 37 Arduino 2560 Firmware settings 37 Power supply and extruder Fan 38 First p...

Page 3: ... Y 200 mm 7 9 Z 200 mm 7 9 The complete printer part list can be found in the appendix Getting Started Safety first Safety is your responsibility Always use the proper protective equipment and safety sense when building or operating a 3D printer Printers have high voltage power supply and extruder operating temperatures can be over 250 degrees Celsius 482 F The operator should understand the hazar...

Page 4: ...want to have computer with a USB to program and run the printer calipers to measure motion distance and extrusion width calibration block STP file that can be modeled or downloaded at BobsCNC com Building the Printer We recommend a large working surface for assembling the printer The plywood may require some minor sanding and can be painted stained or finished for a different look A coat of sealer...

Page 5: ...osite of the bearing into the slotted holes of the extruder mount The slots on one side are larger to make room for nylon ties during a later step 3 Pull the bearing snug against the extruder mount use pliers if needed 4 Cut off the excess of the nylon tie For a clean look and string clearance insert the nylon straps first in the inboard holes ...

Page 6: ...e the extruder through the extruder plywood mount 7 Pull the wires through and re coil them to keep them out of the way and undamaged 8 Install the extruder lock as shown The extruder lock should have a tight fit when sliding onto the aluminum It may need to be sanded thinner for easer assembly fit 9 Install the extruder top mount ...

Page 7: ...erted into the small hole in the aluminum block Y Sub assembly Parts for the Y sub assembly include A 1 Left mount B 2 Bearing holders C 1 Extruder assembly D 1 M3 x 16 machine screw E 1 Right mount F 4 M3 x 20 machine screws G 6 M3 nuts H V groove bearing 623VV I 2 LM8UU bearings J 12 Large nylon ties K 2 8mm rods A B B E H ...

Page 8: ... bearing holders 2 Wrap the bearings by inserting large nylon ties through the side opposite of the bearing into the slotted holes of the bearing holders 3 Pull the bearing snug against the 2 bearing holders use pliers if needed 4 Cut off the excess of the nylon tie ...

Page 9: ...machine screw 6 Tighten the nut as shown 7 Install the screw and bearing through the top of the right mount through the bearing mounting hole 8 Install and tighten the second nut The bearing should rotate freely once installed Bearing mounting hole TOP TOP ...

Page 10: ...the 2 bearing holders 10 Assemble the left and right mounts to the bearing holders with 2 M3 x20 machine screw 11 Tighten the screws Note orientation is important The bearing center should line up with the hole on the left and right mounts Bearing centers ...

Page 11: ...e on the same side as shown Note that the nylon tie under the Y limit see page 25 switch slots will be installed differently 14 For 7 of the nylon ties wrap the rods by inserting large nylon ties through the side opposite of the rods into the slotted holes of the left and right mounts 15 Pull the rods snug against the left and right mounts use pliers if needed 16 Cut off the excess of the nylon ti...

Page 12: ...on tie through the same side as the rod into the remaining slotted holes of the left mount 18 Pull the rod snug against the left mount use pliers if needed 19 Cut off the excess of the nylon tie The extruder assembly should slide on the 8mm rods freely ...

Page 13: ...s 1 Place the bearings in the u shaped slots of the cross member 2 Wrap the bearings by inserting large nylon ties through the side opposite of the bearing into the slotted holes of the bearing holders 3 Pull the bearing snug against the extruder mount use pliers if needed 4 Cut off the excess of the nylon tie ...

Page 14: ...uld be at the back facing inward The middle stepper mount key hole shaped hole should be closer to the left frame The top rear brace rectangular mark should face outward as shown below 1 Properly orient and insert x sub assembly into the left and right frame 2 Press with pliers or tap the 8 M3 nuts into the 8 slots of the 4 braces the handle of the screw drive works well 3 Insert the top and botto...

Page 15: ...s travel 1 Place the Y assembly into the frame 2 Insert the rods through the Y assembly and position them into the holes of the cross member at the bottom and u shaped slots at the top of the frame 2 Wrap the top of the rods by inserting large nylon ties through same side as the rod into the slotted holes of the extruder mount 3 Pull the rods snug against the frame use pliers if needed 4 Cut off t...

Page 16: ...to the slotted holes of the extruder mount 6 Pull the rods snug against the frame use pliers if needed 7 Cut off the excess of the nylon ties The Y assembly should slide on the 8mm rods freely Z Rod Assembly Parts for the Z rod assembly include 1 Frame assembly 2 1 4 20 threaded rods 2 Aluminum couplers ...

Page 17: ...end of the threaded rods into the aluminum coupler 2 Tighten both of the Allen screws 3 Repeat for the other rod and coupler 4 Thread both of the coupler assemblies into the threaded inserts on the Y assembly as shown ...

Page 18: ...on ties F 4 M3 x16 machine screws G 4 M3 nuts Note orientation The string holder is mounted on bottom on the front and it is mounted on top in the rear The cut groove in the string holder mates with the bed mount 1 Install the string holders into the bed mount using 2 M3 x 16 machine screws 2 Install the M3 nuts and tighten B A A ...

Page 19: ...and install the bed 4 Wrap the bottom of the rods by inserting large nylon ties through the side opposite of the rod into the slotted holes of the extruder mount 5 Pull the rods snug against the frame use pliers if needed 6 Cut off the excess of the nylon ties ...

Page 20: ... tube J 1 Filament guide tube nut K 1 Large washer L 2 M3 x16 machine screws M 1 Small washer N 1 M3 nut O 2 M3 x 20 machine screws P 2 O rings 1 Insert the M3 x 16 through the extruder arm 2 Install the small washer on the screw 3 Install the bearing on the screw 4 Install the nut on the screw and tighten 5 Press the nylon bushing into the extruder arm 6 Insert the big washer onto the M3 x16 mach...

Page 21: ...nd adjust the height so that the bearing is centered on the knurled part of the wheel Tighten the extruder drive wheel with the Allen wrench 10 Thread the filament guide nut onto the filament guide tube so that 10 to 12 mm 0 4 0 5 is through 11 Insert the tube and nut into the front plate groove 12 Stack the mid plate on the backing plate and insert the M3 x16 into the lower right mounting hole ...

Page 22: ... guide tube so that it is close to the drive wheel without touching it Adding the Electronics Controller Assembly Parts for the Ramps A 1 Frame assembly B 1 Controller assembly 1 Arduino 1 Ramps1 4 4 Stepper drivers C 4 Small nylon ties Snug up board against the frame until if is firm Do not over tighten the ties as this will damage the control board ...

Page 23: ...ame and Arduino mounting holes 3 Insert the 2 bottom small nylon ties 4 Gently snug the control board up against the frame 5 Cut off the excess of the nylon tie Motion Stepper motors Parts for the motion stepper motors A 1 Frame assembly B 4 Stepper motors C 2 threaded couplers x y stepper motors D 1 X stepper spacer E 4 M3 x 16 x stepper motor F 12 M3 x 10 machine screws D ...

Page 24: ...0 machine screws 4 Tighten the machine screws 5 Set the height on the Y threaded coupler so that the Allen key is flat against the top of the Y assembly 6 Set the height of the X threaded coupler so that it is approximately 1 mm less than the round spacer thickness This will give the build platform clearance 7 Install and tighten both of the Z stepper motors 4 M3 x10 mm machine screws 8 Tighten th...

Page 25: ...ews E 4 M2 5 nuts F 1 small nylon tie 1 Insert the small nylon tie through the Y limit switch long wires hole loop around the rod and back up through the second limit switch hole Left side 2 Tighten the nylon tie and cut off the excess 3 Place the Z Limit switch short wires on the left frame near the top with 2 M2 5 x16 screws and nuts 4 Tighten the nuts ...

Page 26: ...crews and nuts 6 Tighten the nuts Adding The String Drive Parts for the string drive assembly include A 1 X drive string assembly shorter B 1 Y drive string assembly longer C 4 large nylon ties The kit includes 2 sets of tied string The instruction for tying the knot has been added for reference ...

Page 27: ...d and tighten the knot The tied length of the string from one nylon tie to the other is X string L 330 350 mm Y string L 690 710 mm X string Drive 1 Place a large nylon tie into behind the string holder then thread the large tie connected to the string through the string holder into the loose nylon tie 2 Push the bed to the rear stop making the coupler closer to the nylon tie 3 Push the nylon tie ...

Page 28: ...e the bed back and forth to ensure that the sting rides in the threads of the coupler with full travel threads will move up as the bed moves rearward 7 If needed adjust the string moving it up or down the threaded coupler 8 Tighten the sting by pushing the nylon tie into the string holder 9 Cut off the excess of the nylon ties The string should be on the right side of the threaded coupler and form...

Page 29: ...uder This nylon tie should be placed entirely through the bottom slot as shown 3 Move the extruder to the left stop and push the nylon tie connected to the string into the string holder until the nylon tie is no longer touching the threaded coupler 4 Wrap the string around the threaded coupler 3 to 4 times close to the bottom of the threaded coupler The string should be higher on the front side of...

Page 30: ... top slot on the right side of the extruder 7 Snug up the string and slide the extruder back and forth to ensure that the sting rides in the threads of the coupler with full travel with nylon tie clearance 8 If needed adjust the string moving it up or down the threaded coupler 9 Tighten the string by pushing the nylon tie into the extruder slots 10 Cut off the excess of the nylon ties as shown ...

Page 31: ... assembly parts The string on the nylon ties may need to be adjusted if there nylon tie hits the frame Please note that the string orientation Adding the Extruder Driver Parts for adding the extruder driver include D 1 Frame assembly E 1 Extruder assembly F 2 M3 X 20 machine screws G 2 M3 Nuts ...

Page 32: ...ight mounts 2 Insert and tighten 2 M3 X20 machine screws 3 Insert the tube into the SMC The SMC fitting will release the tube if the blue ring is pushed into the fitting as the tube is gently pulled This allows for quick filament changes ...

Page 33: ...pacers C 4 M3 X 20 machine screws D 4 M3 Nuts The Build platform has counter bored holes These holes should be facing up 1 Place the 4 spacers over the holes in the bed mount 2 Insert 4 M3 X 20 machine screws through the build platform spacers and then the bed mount 3 Install and tighten the 4 M3 Nuts ...

Page 34: ...ing the Controller and Extruder Fan Adding the Extruder Fan 1 Snap the extruder fan on to the extruder so that it is aligned with the bottom of the aluminum heat sink and facing left as shown Ramps1 4 Connections ...

Page 35: ... H X stepper motor D X min limit switch I Y stepper motor E Y min limit switch J Z stepper motors Wire Routing With Nylon Ties There are drilled holes in the frame and small extra small nylon ties included in the kit to secure the wires Several sets of wires will need clearance to move with the Y assembly They included the Extruder and Y stepper motor wires Z limit switch wires The Extruder heater...

Page 36: ...ment spool holder include A 1 Printer B 1 Spool leg C 1 Spool support The reel holder is designed to quickly change spools of filament The groove in the top of the spool support should be oriented to the outside to ensure spool clearance with the frame ...

Page 37: ...re has been downloaded to the controller and configured for the RP9 You can skip to the power supply section 1 Download Arduino Software 2 Use the Arduino software to configure the firmware 2 Connect the controller to the computer via the USB and download the firmware to the computer Arduino 2560 Firmware settings The firmware will need to be up loaded to the Arduino board using the Arduino softwa...

Page 38: ...pper motor 98 5 steps mm Z stepper motors 2519 685 steps mm E stepper motor 164 7 steps mm Starting PID control settings for the extruder are Integral drive max 255 Integral drive max 40 PID P gain 8 5 PID I gain 0 35 PID D gain 51 5 Temperature sensor type 8 The firmware offers an auto tune command M303 to set the PID values Power supply and extruder Fan power The Power supply will need to be con...

Page 39: ...to the Ramps 1 4 and power supply as shown The red wires go to the positive connections and the black wires go to the negative connections Again the Power supply will need to be connected correctly to avoid possible damage to the controller board To Ramp 1 4 To Power Supply To extruder fan ...

Page 40: ...and Z steppers make sure the move in the correct direction The diagram has arrows showing the positive axis directions If the motors move in the incorrect direction it can be changed with a firmware setting or turning the stepper motor connectors 180 degrees The power must be removed before stepper motor connectors can be removed to avoid damage to the controller board Loading the 1 75 mm filament...

Page 41: ...ected correctly Note that the switches are wired normally closed If the limit switches do not function troubleshoot the switches using the M119 code 3 Set the firmware for Z max length to 210 mm 4 Use the G0 Z20 command to move the printer close to the bed 5 Slowly move the Z axis close to the bed Use a gauge or business card to get the right side of the bed the set distance to the nozzle business...

Page 42: ...ing First layer is key Experiment to learn what is the best layer height Different colors will have different printing characteristics Push to connect SMC will quickly release the filament guide tube and allows for quick filament changes The firmware offers an auto tune command M303 to set the PID values Appendix Warranty and Return Policy 30 Day Warranty BobsCNC will guarantee all supplied parts ...

Page 43: ... during shipping for a return It is suggested that in case of a return that the buyer purchase shipping insurance Parts included in the basic kit Quantity Extruder assembly Y Sub Assembly X Sub Assembly Frame Assembly Z Assembly Z Rod Assembly X Assembly Extruder Assembly Controller Assembly Motion Stepper Motors Limit Switches Braided String Drive Extruder Driver Mount Build Plate Extruder Fan Ex...

Page 44: ...Washer 1 1 Small Washer 1 1 Bowden Nut 10 24 1 1 Threaded Couplers 7 16 20 2 2 1 5 mm Allen Wrench 1 1 2 mm Allen Wrench 1 1 Limit switches long wires 2 2 Limit switch short wire 1 1 Braided String 4 2 2 Extruder 1 1 Extruder Drive Gear 1 1 Extruder Fan 1 1 Added parts included in the deluxe kit Quantity Extruder assembly Y Sub Assembly X Sub Assembly Frame Assembly Z Assembly Z Rod Assembly X Ass...

Page 45: ...er motors The feedstock drive wheel needs to fit a 5 mm shaft and knurling bottom diameter of 6 mm Search online for feedstock drive wheel The Arduino Ramps1 4 and A4988 stepper drives with heat sinks are common in online stores The power supply should be 12 VDC an rated at 6 to 8 amps Search online for 12 VDC 8 amp power supply Other supplies that you will need are Build plate can be hardboard gl...

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