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Discuss any sort of mechanical stuff here: positioning systems, gears, extruding methods, etc.
Gigaprize 2016 - Free Gigabot - 8 years ago
re:3D is awarding a free Gigabot printer on December 28th. Enter now! Good Luck and Happy Printingby chief_hacker - Competitions
Re: Annealing ideas - 8 years ago
Here are a couple pictures from a recent experiment I did with Natureworks PLA 3D850 that claims increased crystallization with heat treat. I used a wall oven to heat treat the parts at 200F but did not verify with a second thermometer. Picture: 2016-06-20 16.41.53 The three parts on the left are not heat treated and the three on the right are heat treated at 200F for 15 minutes. I placed the paby chief_hacker - General
Re: Save Pronterface custom buttons - 8 years ago
Yup, Copy the printrunconf.ini file from your old computer C:\Users\"Your name" This file contains all your settings.by chief_hacker - General
Re: Closed loop vs. stepper motors -advice sought - 8 years ago
I think the biggest advantage is greater torque at high RPM. Steppers give the greatest torque near 0 RPM and torque begins to drop as rotational speed increases. Servos maintain a flatter torque curve with increase in RPM. In the end, if you size the stepper correctly and place the appropriate limits on acceleration and velocity you will have the same reliability as a closed loop system. I haveby chief_hacker - Mechanics
Re: What's the largest aluminium frame reprap? - 9 years ago
Hey John, If you want to email me at the info@ address on our main page I would be happy to chat. We are in the process of making all the Gigabot plans open source (including the new 42" model) on Wevolver maybe I can get you started right away. -Matthewby chief_hacker - Extruded Aluminum Frames
Re: Random sinks into model, Hot end squashes model - 9 years ago
Just a thought, I have seen this behavior if the g-code data becomes truncated so that if the line of code originally was: G1 Z0.5 F200 changes to: G1 Z0. Do you see any strange movements in the X and Y axis? Data loss can happen if too much EMI is present near the wires transmitting data. Common switching power supplies and high voltage (110V or 220V) wires put out EMF. They should be keptby chief_hacker - Printing
Re: printers longer than 45cm? Is Rapidbot Mega my only choice? - 11 years ago
Ben, I think you will be very happy with the size and strength of Gigabot. The all metal frame makes a rigid machine with very little vibrations and more accuracy with your print. I have been traveling with Gigabot for the last couple weeks with stops in Santiago Chile and the Atacama desert in the north of Chile. We have been doing a lot of printing and Gigabot has been performing really well.by chief_hacker - General
Re: printers longer than 45cm? Is Rapidbot Mega my only choice? - 11 years ago
HI Ben, For your large format printing needs you should check out Gigabot on kickstarter. We have routinely print 45-60cm long PLA objects without curling. The trick to getting really good results is multi-fold: 1) Flat and level build surface 2) really good adhesion of the first layer 3) optimizing extrusion temp and cooling fans 4) the object's shape.by chief_hacker - General
Re: 3D printer Suggestions - 11 years ago
@bobc Thank you for looking at our website and giving me honest feedback. We are a new start-up, hence the kickstarter. What type of technical substance would you like to see on the website?by chief_hacker - General
Re: 3D printer Suggestions - 11 years ago
If you can wait a week or so re:3D will have it's kickstarter up. We are offering a new printer with 600mm x 600mm x 600mm build volume that is in your price range. The machine is really sturdy and provides a great platform for expansion and hacking. It is true that big prints take time and that is why we are continuing our development of large diameter print nozzles and high print speeds. Checkby chief_hacker - General
Re: Largest 3D printed object at home? - 11 years ago
@ 24.5 hrs into the print (0.3 mm layer height) I had a feed issue and had to stop the print. The feed issue has been resolved and I am now printing again The overall height of the vase ended up being about 400mm. Even so it is a very impressive piece. I will soon update the picture link I sent earlier.by chief_hacker - General
Re: Largest 3D printed object at home? - 11 years ago
a life-sized Owl be coolby chief_hacker - General
Re: Largest 3D printed object at home? - 11 years ago
Ok, this thing is still printing... but you can sneak a peek of the progress here: I will update the pic when it finishes. @Leorex It is really important to have a solid printer with precision parts whether you are printing large or small. The points you raise are good ones. Unfortunately, the printrbot was not originally designed to be printing such tall objects. This twisted gear lamp I amby chief_hacker - General
Largest 3D printed object at home? - 11 years ago
We have all seen the large industrial 3D printers making big wrenches, car parts and bicycles but what is the largest 3D printed object made on a RepRap at home? I am curious how my 500mm dia and high twisted gear vase will stack up....by chief_hacker - General