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BobsCNC RP9V2 Assembly Instructions Manual

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RP9V2 Assembly Instructions

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Summary of Contents for BobsCNC RP9V2

  • Page 1 RP9V2 Assembly Instructions...

  • Page 2: Table Of Contents

    Specifications ........................3 Getting Started ........................ 3 Safety first ........................3 Required tools ......................... 3 Building the Printer ......................4 Extruder Assembly ...................... 4 Y Sub-assembly......................7 X-Subassembly ......................13 Frame assembly ......................14 Z Assembly ....................... 15 Z - Rod Assembly...................... 16 X Assembly .......................

  • Page 3: Specifications

    Specifications 5 ply Baltic birch frame Oil hardened drill rod linear rails Filament drive with high grip v-groove threaded coupler drives Remote extruder with 1.75 mm drive Foot print Width 520 mm (20.5") - including spool holder Depth 550 mm (21.7" - with max travel Height 660 mm (26") - room for filament guide tube Print Area X 200 mm (7.9")

  • Page 4: Building The Printer

    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.
  • Page 5 1. Place the bearings into the rectangular slots of the extruder mount. 2. Wrap the 2 bearings by inserting large nylon ties through the side opposite 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.
  • Page 6 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.

  • Page 7: Y Sub-Assembly

    11. Insert the 4 M3 x 20 screws into the holes. 12. Install the 4 nuts and tighten. Check to ensure that the thermistor is inserted into the small hole in the aluminum block. Y Sub-assembly Parts for the Y sub-assembly include: A.
  • Page 8 1. Place the bearings in the rectangular slots of the 2 plywood 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.
  • Page 9 Bearing mounting hole 5. Insert the v- groove bearing and nut on the M3 x16 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.
  • Page 10 9. Press in the 2 M3 nuts into the slots on both of 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.
  • Page 11 Note orientation Note orientation 12. Slide both 8mm rods through the bearings on the extruder assembly. 13. Slide both rods into the left and right assemblies with the extruder nozzle facing down. The large slots in the extruder, bearing and large stepper motor hole are on the same side as shown.
  • Page 12 17. Wrap the rod by inserting the last large nylon 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.

  • Page 13: X-Subassembly

    X-Subassembly Parts for the x-subassembly include: 1 Plywood cross member 4 LM8UU bearings 8 Large nylon ties 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.

  • Page 14: Frame Assembly

    Frame assembly Parts for the frame assembly include: A. 1 Top front brace B. 1 Top rear brace C. 1 Left frame D. 1 Right frame Indicator drill E. 1 X sub-assembly F. 2 Bottom braces G. 8 M3 x 20 machine screws H.

  • Page 15: Z Assembly

    Z Assembly Parts for the z assembly include: 1 Frame assembly 1 Y assembly 2 8mm rods 4 Large nylon ties The orientation of top nylon ties is important. The nylon locking block needs to be on the outside to give maximum Y axis travel. 1.

  • Page 16: Z - Rod Assembly

    5. Wrap the bottom of the rods by inserting large nylon ties through the side opposite as the rod into 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.
  • Page 17 1. Thread one 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: Assembly

    X Assembly Parts for the x assembly include: A. 2 X string holders B. 1 X bed mount C. 1 Frame assembly D. 2 8mm rods E. 4 Large nylon ties F. 4 M3 x16 machine screws G. 4 M3 nuts Note orientation.
  • Page 19 3. Insert the rods into the bearings on the cross member 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.

  • Page 20: Extruder (Cold End) Assembly

    Extruder (cold end) Assembly Parts for the cold end include: A. 1 Backing plate B. 1 Bearing arm C. 1 Mid plate D. 1 Front plate E. 1 Drive bearing F. 1 Nylon bushing G. 1 Stepper motor H. 1 Extruder drive gear I.
  • Page 21 7. Insert the screw and washer thru the nylon bushing on the extruder arm. 8. Insert the screw through the backing plate and screw into the stepper mounting hole. 9. Insert the extruder drive gear and adjust the height so that the bearing is centered on the knurled part of the wheel.

  • Page 22: Adding The Electronics

    13. Stack the top plate onto the mid plate and insert 2 M3 x 20 machine screws. 14. Tighten all 4 of the screws. 15. Add 2 o-rings as shown. 16. Adjust the guide tube so that it is close to the drive wheel without touching it. Adding the Electronics Controller Assembly Parts for the Ramps:...

  • Page 23: Motion Stepper Motors

    1 Install the controller board on the back of the top brace as shown. It will cover the rectangle grove. 2. Insert and loosely tie the top two small nylon ties through the frame and Arduino mounting holes. 3. Insert the 2 bottom small nylon ties. 4.
  • Page 24 1. Place the spacer on the X stepper motor and install the assembly onto the middle mount of the cross member. 2. Install and tighten the 4 M3 x16 machine screws. 3. Install the Y stepper motor to the Y assembly with 4 M3 x 10 machine screws. 4 Tighten the machine screws.

  • Page 25: Limit Switches

    Limit Switches Parts for the motion stepper motors: A. 1 Frame assembly B. 2 Limit switches (long wires) C. 1 Limit switch (short wire) D. 4 M2.5 x16 machine screws 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.

  • Page 26: Adding The String Drive

    5. Install the X limit switch (long wires) on the inside of the lower left frame. 2 M2.5 x 16 screws 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.

  • Page 27: Tying The Knots (Uni-Knot)

    Tying the knots (Uni-knot) This knot is called the Uni-knot and has "how to" videos on You-Tube. 1. Loop the string through the locking block of the nylon tie. 2. Loop the same string behind the horizontal stationary string, bring it up over both horizontal strings 3.
  • Page 28 4. Wrap the string around the threaded coupler 3 to 4 times close to the bottom of the threaded coupler. 5. Insert the large nylon tie with the string attached through the rear string holder and the loose nylon tie. 6.

  • Page 29: Y String Drive

    Y String Drive 1. Insert the large loose nylon tie into the top of the left hole and align the box end to the bottom hole of the extruder mount. 2. Insert the large nylon tie with the string attached into the bottom slot on the left side of the extruder.
  • Page 30 5. Route the string across the printer to the right hand mount around the v-groove bearing then back to the extruder. 6. Insert the large loose nylon tie into the right hole and align it with the top slot on the right side of the extruder.

  • Page 31: Adding The Extruder Driver

    The extruder should move from left to right without contacting any parts of the frame or Y 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.
  • Page 32 1. Press the 2 M3 nuts into the right 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.

  • Page 33: Build Platform Assembly

    Build Platform Assembly Parts for adding the build platform include: A. 1 Build Platform B. 4 Round Spacers 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.

  • Page 34: Connecting The Controller And Extruder Fan

    Connecting 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: Wire Routing With Nylon Ties

    The main power (A) and the stepper motors (C,H,I, and J) have to be connected correctly. Improper connection can permanently damage the board. If you are unsure about the connection, the internet is a good resource and has a great deal of information on the Ramps1.4. The connections are: A.

  • Page 36: Filament Spool Holder

    Filament Spool Holder Parts for adding the filament 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: Initial Controller Setup

    1. Insert the spool support into the right frame and spool leg rectangular slots. Congratulations your Printer is assembled! If you are new to 3D printers, there is a lot of learning ahead. The good news is that there are many resources online to help you with questions. You will need to choose software and firmware that suits your needs.

  • Page 38: Power Supply And Extruder Fan

    The firmware will need to be configured. Good starting values are: X Velocity 100 mm/s Y Velocity 100 mm/s Z Velocity 4.5 mm/s E Velocity 100 mm/s X Homing Velocity 100 mm/s Y Homing Velocity 100 mm/s Z Homing Velocity 4.5 mm/5 X Acceleration 2000 mm/s...
  • Page 39 To extruder fan To Power Supply To Ramp 1.4 1. Connect the power plugs to the Ramps 1.4 and power supply. 2. Connect the power plugs 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.

  • Page 40: First Print (Quick Guide)

    First print (quick guide) Initial setup and calibration of the printer will takes some time but once you understand the parameters you will be able to diagnose printing issues quickly. We have included some basic steps to get you started. Connecting the printer 1.
  • Page 41 3. Use the software controls to set the extruder to the correct working temperature of the filament. Once the extruder reaches the set temperature, use the software control to feed the filament into the nozzle. Check to make sure the extruder stepper motor rotates in the correct direction.

  • Page 42: Appendix

    Warranty and Return Policy 30 Day Warranty BobsCNC will guarantee all supplied parts for 30 days after the delivery date. If there are missing or defective parts, the buyer must contact Bobs CNC during this 30 day time frame using the "Contact Us" form located at BobsCNC.com. After 30 days, no warranty is given nor will any refund be given.

  • Page 43: Parts Included In The Basic Kit

    Technical Assembly BobsCNC cannot guarantee the buyer's ability to assemble the kit or calibrate the printer. The quality of the prints are dependent on proper set up and understanding of the printing parameters, and therefore results may vary. The assembly, calibration, and understanding of these parameters requires technical and mechanical proficiency.

  • Page 44: Added Parts Included In The Deluxe Kit

    M2.5 X 16 Machine Screws M2.5 Nuts M3 X10 Machine Screws M3 X16 Machine Screws M3 X20 Machine Screws M3 Nuts 1/4-20 Inserts 1/4-20 Threaded Rods Helical Couplers LM8UU Bearings V groove Bearing Drive Bearing Large Nylon Ties Small Nylon Ties 8 mm Drill Rod Bowden Tube Nylon Bushing...
  • Page 45 The parts in the deluxe kit can be purchased separately. The extruder for the RP9 printer can be found at: BobsCNC.com NEMA17 stepper motors can be found in many online stores. The 5.5Kg.cm (76 oz-in). Other extruder stepper should rated holding torque of stepper motors can be less but could reduce performance.

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