Yeah, i got white powder at the time, because they said that this specific material would defiantly be the easiest for starters. At the time, I did not really question their advice, but I am in the process of getting some black powder now The problem with adding carbon (I got black pigment from an art-shop) is that it worsens the flow characteristics of the nylon. So if you put too much of it inby Lukas Hoppe - Powder Printing and Selective Laser Sintering
@Ezrec That sounds really promising, I also want to try powder on my printer in the near future. It could make a very cheap printing material! Btw. Where are you going with the brundleFab? Do you see it printing polymers too? I think high-speed sintering could be the next big thing. Especially if you can get away without other means of preheating! I just watched a video from the university of Sheby Lukas Hoppe - Powder Printing and Selective Laser Sintering
Yeah, even heating was the biggest challenge, or maybe even still is the biggest challenge on my printer. I think that the bigger the distance between the lamp and the powder the easier it is to heat it up evenly. So I was also quite angry with myself that I did not leave 5 more centimeters, I could luckily get away with just two pieces of aluminum foil that I folded to act as a flap to direct thby Lukas Hoppe - Powder Printing and Selective Laser Sintering
I thought it would be about time to update, as I have finally printed the first useful objects with you-sls. Video of the Printer in action Because I haven’t installed the piston heater, I could only use the optical heating system and therefore needed to adhere the object to the build plate. But for a first and second print I am pretty pleased. A big thank you to everybody who donated to theby Lukas Hoppe - Powder Printing and Selective Laser Sintering
You are right, even heat distribution is definitely something you want. I just thought it would be good enough If I simply mounted these bulbs high enough, the sintratec uses a very similar system, from what I saw in the video. I belive that the glass microspheres also add to a smoother surface finish and makes the material harder. I think the main advantage is that it is easier for the machine tby Lukas Hoppe - Powder Printing and Selective Laser Sintering
Well, as I have to admit I am not an expert on lasers, so I just got a relatively cheap module that uses this 450B 1,6W 450nm laser diode and came with a collimator and a 2 amp laser driver that supports TTL (which is not really required, as you can simply PWM the whole driver. The picture frame idea is really clever, I will keep that in mind. Well the gantry leaves a relatively small space betweby Lukas Hoppe - Powder Printing and Selective Laser Sintering
Great collection you have come up with, i just wanted to add the OpenSLS project to the list and maybe introduce those of you who don’t know it to the CandyFab. Whilst the work on the project has come to a stop I think they delivered some remarkable results with heat-sintering sugar. Heat-Sintering is also something that really interests me because it does not use an expensive laser system. Therby Lukas Hoppe - Powder Printing and Selective Laser Sintering
Of course one will still get access to all the files, as they exist anyhow. Also if I don’t get all the funds, I will still work on this project as I am very interested in having such a printer myself, and I also feel like that having a platform on which you can base future SLS 3d printers would be cool and appreciated. I was indeed planning to use a visible laser, in fact I have already one sitby Lukas Hoppe - Powder Printing and Selective Laser Sintering
Greetings, during the last year I have started to design a SLS 3D printer that could be built by everyone with "limited tools" for about 2k, so the goal I set for myself was very similar to what the Reprap project stands for. As I have taken a lot from this great community (the first 3d printer I have built was a Reprap) I thought that in the following moths I can give something back. I have actuby Lukas Hoppe - Powder Printing and Selective Laser Sintering