Search found 433 matches

by dragonator
Wed Feb 27, 2019 5:41 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 287
Views: 135159

Re: Hacking the Xaar 128 printhead

Looking very nice. No obvious blurring or missing lines. Is the speed currently limited by anything or are you printing at this speed because it is easier for now. I am not really familiar with the damper. What is it's purpose. Is it there to smooth out the flow of ink you are pumping to the printhe...
by dragonator
Sun Feb 24, 2019 5:58 pm
Forum: Props in progress
Topic: The Turret
Replies: 9
Views: 4474

Re: The Turret

A few more weeks, a few more progress. DSC02308_LW.jpg I first tore out all of the wiring that was in the turret. This was a mess that I did not even want to fix. I then started to rewire the turret (this time with an actual design beforehand). The basics are still the same. There is a 12V/30A power...
by dragonator
Tue Feb 19, 2019 5:45 pm
Forum: 3DP printing
Topic: giving away my ZCorp Z400 for free
Replies: 2
Views: 1446

Re: giving away my ZCorp Z400 for free

Dibs
by dragonator
Tue Feb 19, 2019 5:44 pm
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 32807

Re: Hacking cartridge HP 84/85

Is the hole you pointed to in some way connected to the printer? I suspect the bellows exist to pressurize the ink (or maybe even to create a vacuum), but that would only be possible if that hole is connected to the printer in some way. In any other way it is pretty similar inside to most other prin...
by dragonator
Tue Feb 19, 2019 6:35 am
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 148
Views: 32807

Re: Hacking cartridge HP 84/85

That is not what I expected to be on the inside. When you add ink or water to it, does it fill the plastic bellows or go past it. I expect that the ink needs to be on within the black plastic body with the printhead on it and not within the clear bellows to work, but I have a bit of difficulty under...
by dragonator
Mon Feb 18, 2019 6:49 am
Forum: 3DP printing
Topic: PowderMaker1 3DP printer
Replies: 22
Views: 4600

Re: PowderMaker1 3DP printer

PMMA should be fine for most powders. If you have it clear you can see how much powder is left, which is something I have always missed on my machines. I only have experience with the 3 printers I built, so I am not expert on this, but my experience is that powder has a habit of getting everywhere. ...
by dragonator
Mon Feb 18, 2019 6:40 am
Forum: Plan B
Topic: Megatronics v3.2 Issues
Replies: 1
Views: 606

Re: Megatronics v3.2 Issues

Do you know what the physical difference is between the header on the V3.2 and the V3.1. I did read through the document a little, but it only mentions what the fix is, and not the problem, and I have difficulty figuring out what is causing you issues.
by dragonator
Sun Feb 17, 2019 8:31 am
Forum: 3DP printing
Topic: PowderMaker1 3DP printer
Replies: 22
Views: 4600

Re: PowderMaker1 3DP printer

That is a nice looking draft David. What material will this printer be made of? Will it be made of plastic or of some sort of metal? Will you add another to surface to this design or are we looking at the working surface already. If so, how do you plan to keep powder withing the area of the pistons ...
by dragonator
Tue Feb 12, 2019 5:02 pm
Forum: Plan B
Topic: Problems with SD card
Replies: 8
Views: 1986

Re: Problems with SD card

What do you do before you start printing? The printhead does need to be cleaned with water before you start printing. If you have not been printing for a while, the printhead needs to be cleaned with an alcohol to get rid of clogs. If that does not fix the problem I would like to see an image of you...
by dragonator
Tue Feb 05, 2019 6:09 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 534
Views: 307887

Re: Hacking the HP45

A 555 does not work. While all examples on the internet speak of a 555 being rising edge triggered, it is not. It is can extend a pulse, but not make a shorter pulse than the input. This left me with the issue of what to use. I bought 74HC123 monostable multivibrators. On the breadboard it worked fi...