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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Creality folder - 2 years ago
How about a Creality folder?by cozmicray - Administration, Announcements, Policy
Re: Looking for new contol boards and firmware - 3 years ago
VDX What is your source for powders for sintering? I have found small quantities of PLA or other powders very limited Tnxby cozmicray - General
Re: My CoreXY build log - 4 years ago
Please get some socket head bolts and a set of hex drivers Phillips head screws for wood working (maybe) Bed See Digital Dentist: UMMD 3D Printer Bed Design You may need Kinematic Leveling with steel / aluminum interfaces aluminum lead screw block to steel bed to aluminum bed plate thermal differencesby cozmicray - CoreXY Machines
Re: I've built a metal 3D printer - Is anyone interested in testing it out? - 4 years ago
Looks like a guided MIG welder. A MIG welder's best friend is a grinder?by cozmicray - Developers
Re: Which Model as Basis for Rebuild - 4 years ago
ReBuild? What is being rebuilt? What existing parts must you reuse? What are your NEW requirements? I have been in search of what factors are important for a good printer? I am amazed at the performance of the CR-10 I purchased and just can't figure out what they did right to make a great 3D printer?by cozmicray - CoreXY Machines
Re: I fixed a radio - 4 years ago
Cool do you hear "Hello Mr and Mrs America and all the ships at sea" Some one born in 2000 would never know what it is? Put an arduino w blue-tooth in it, so you can listen to it with your air pods and a stepper motor on dial drive, so you can tune it from an app!by cozmicray - Look what I made!
Re: My 3d printer (work in progress) - 4 years ago
John Harrison was a carpenter who build his H1 clock in 1735. A clock maker that showed precision could be done by hand tools and he went on to get Longitude prize. One of his clocks has been running with great accuracy for 300 years He taught his neighbors to file gear teeth and produce gears So .... a lot can be done with simple tools to make a great project Also design, design, designby cozmicray - CoreXY Machines
Re: Hictop 3DP11 Printer - Newbie - 4 years ago
You give little information? Did you build this printer Did you look at hictop site and assembly and user manual? Are you using the local control panel or PC software to control it? Is the Marlin firmware configured properly? You might want to look at: Prusa i3 and variantsby cozmicray - General
Re: Does this work? 
- 4 years ago
DD said "The screws should be put as close to the bearing blocks as possible." so move the screws and rails together to a spot that supports the bed best. Alignment of 4 rails is tough -- self aligning? bed wobble around? Good engineering -- accepting design that works and using it! QuoteMorbi Ok! Thank you for your response! So basically, I keep the linear rails where they are and pby cozmicray - CoreXY Machines
Re: Beginner with DaVinci 1.0 parts, where should I start? - 4 years ago
My DaVinci v1 Case 58 x 42 x 40 cm enclosed case heated 220 x220 mm bed replaced hot end and extruder --- micro swiss like hot end with bowden extruder (I have Vstruder on it now) Repetier firmware (Marlin also works well) Prints great --- meets all your requirements except your printer is a useless pile of junk now?by cozmicray - General
3MF files for 3D printing - 4 years ago
Have you heard about 3MF file format for 3D printing Here is a little video on 3MF vs STL What do you think?by cozmicray - General
Re: Reprogram or replace? - 4 years ago
Leave that printer intact! Get / Build another printer! Creality 10 or Ender 3 you will have a very large use base!by cozmicray - Controllers
Re: Single line calligraphy/handwriting fonts? - 4 years ago
The "hershey text" extension in Inkscape gives single stroke fonts A good resource:by cozmicray - Reprappers
Re: DiffBot - Differential Screw-Driven XY Gantry - 5 years ago
Perhaps a sprial bevel gear they are very smooth and used in Hi torque applications (differentials) ?What is the best (smoothest) right angle gear configuration? Have to also consider the locking of the gear?by cozmicray - Look what I made!
Re: 3D Printed Home in Austin, Texas - 5 years ago
012 to 032 in below video shows printing of this house looks like a lot of labor around 27 hours to print 27 days to finish? 3D printed house cost around $10,000 to create (printed portion only)by cozmicray - General
Re: Smooth Bolts for Idler bearings's (instead of threaded screws) - 5 years ago
Quoteetfrench Actually, shoulder bolts were not designed for bearings although many people use them for this. Most shoulder bolt shoulders are .002" to .004" undersized which makes for a very loose fit in a bearing. McMaster-Carr has precision shoulder bolts which are -.001" to 0" and would be a better choice. What were shoulder bolts designed for? ??by cozmicray - Reprappers
Re: Best print head mount option on X-axis - 5 years ago
You did not specify what type / kind of extruder / hotend you will be using? Direct, Bowden, ---- looks like E3D Titan Original FT-5 hung extruder / hotend below a horizontal linear rail 713 maker makes a beefy aluminum mount [713maker.com] "I will likely try one of the configurations I show since I have a couple extra guides (crappy ones) on hand." It appears your designs were a forgonby cozmicray - Extruded Aluminum Frames
Re: Critique and opinions wanted on printer design. - 5 years ago
The linear rails and rods on X, Y may over constrain the X-Y movement The CR-10 is so simple, ---- 3D printers were max frustration until I got CR-10 300 x 300 Wish I knew what components make for frustration free printing Coupling wobble has induced many artifacts in prints Get the right SCR for AC bed one rated for 220 and the current your heater will pull maype a separate switch on itby cozmicray - Extruded Aluminum Frames
Re: Critique and opinions wanted on printer design. - 5 years ago
You should perhaps start with requirements -- then get parts that build to the requirements See DD build If I see the orange as printed parts -- those parts may be the best use of metal I must say my CR-10 is a rock solid printer with little frustration -- just can't figure out what is important to make it a great printer? You stated MGM linear rails on all axes -- your pictures show onby cozmicray - Extruded Aluminum Frames
Re: TTL on a cheap Chinese driver troubleshooting - 5 years ago
So CO2 is a whole new ball game -- not a diode laser!!!! The trigger is a TTL link " TTL (Transistor-Transistor Logic). For a TTL input this means that anything below 0.8 volts is a “zero” and anything above 2.4 volts is a “one,” and that it presents a load of less than 1.6ma to the driving circuit" Your resistor is limiting the current thru the TTL switch. The pulse width is determined byby cozmicray - Laser Cutter Working Group
Re: CNC/Laser Enable - 5 years ago
???Arduino Mega/Ramps 1.4 - Re-Arm/Ramps 1.4??? Will those run at higher than 5000mm/min I use arduino / GRBL PWM 2W laser to control power out and engraving I don't understand needing > 5000mm/min unless you need project done is 10 msec?by cozmicray - Firmware - Marlin
Re: Several Creality CR10S printers on Amazon UK - which one? - 5 years ago
Comgrow is a professional 3D printer distributor, we provide high quality and cost effective 3D printers to everyone of you. Customers could buy the printers directly on www.comgrow3d.com. The printer will be shipped from China. So I think Comgrow may have a EU presence but who knows? I don't think Comgrow adds anything but you might want to drop them an email to see if the give special supportby cozmicray - General
Re: Spherical slicing - 5 years ago
Perhaps you could try Spiralize contour in Cura Configuration >> Extrusion >> Spiralize Contourby cozmicray - Experimental
Re: GCode Laser offset - how? - 5 years ago
What software are you using to produce G-code? How does the software turn laser ON/OFF and set power? My experience with GRBL laser engraver I guess people do it in Marlin? For a while I used a micro switch on Z axis to close when Z < 0 and fire laser Laser/Spindle Configuration Laser web lets you set laser ON/OFF command produced in G-code #by cozmicray - General
Re: Need a very flexible part printed - 5 years ago
60ml Syringe Extruder for Liquid Deposition Modeling Bowden Syringe Extruderby cozmicray - Printing
Re: Printer to CNC - 5 years ago
Why is this in "Prusa i3 and variants" will you be converting i3? Printing and milling Two extremes ......Printing -- little forces on mechanics all axes ......Milling --- extreme forces on the mechanics all axes ---- importantby cozmicray - Prusa i3 and variants
Re: Help me find this printer? - 5 years ago
Folgertech buildplate material Aluminium composite material (ACM), are flat panels consisting of two thin aluminium sheets bonded to a non-aluminium core. The standard ACP core is polyethylene (PE) or polyurethane (PU). The older FT-5 used Melamine sheets Now all use ACM Seeby cozmicray - General
extruder to hotend - 5 years ago
How to: attach bowden extruder directly to hotend without E3D type connection? E3D type heat sink on right (in photo below) with stepped transition Bowden extruders at left, Bowden hotends in center Threads in all are the type found on PTFE tubing adapters Mount must: be a heat break to keep extruder cool have a 1.75mm bore to conduct filament into hotend all metal (avoid PTFE) Ideasby cozmicray - General