Search found 7 matches

by bigbomber
Wed Dec 04, 2019 10:35 pm
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 162
Views: 50412

Re: Hacking cartridge HP 84/85

congratulations!!!!
it is a very good to hear that HP 85 is hacked!!!
can you give us a conclusion about pinout, timings and nozzles physical specifications?
I'm very interested in your project
by bigbomber
Mon Nov 12, 2018 10:28 am
Forum: 3DP printing
Topic: inkjet liquid formulations for metals/ceramics
Replies: 4
Views: 3033

Re: inkjet liquid formulations for metals/ceramics

When printing sand casting molds I seem to recall professional printers printing in sand using furan resin. That also seems to be common for all sand casting in general. I would not know if the same resign would be usable in other materials or what the properties are. I do suspect Furan resin can s...
by bigbomber
Mon Nov 12, 2018 9:53 am
Forum: 3DP printing
Topic: Material Research: Sake + Sugar/Meringue Powder
Replies: 9
Views: 12567

Re: Material Research: Sake + Sugar/Meringue Powder

what kind of edible binder do you use? and how can you replace the ink of cartridge by the binder? can you please explain exactly? I just add some water to the ink of cartridge, but after that, by rotating the cartridge downward, the ink start to drop from head of printer when it is off. also after ...
by bigbomber
Thu Sep 22, 2016 8:43 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 555
Views: 352852

Re: Hacking the HP45

I like the idea of the analog maximum pulse width. Do you have any way of lengthening or shortening it in the future to modify it? Hi pulse width is a constant, there is no need to change it during a process, but if you mean change it in next version of driver, I can say YES. By changing a simple r...
by bigbomber
Mon Sep 19, 2016 9:48 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 555
Views: 352852

Re: Hacking the HP45

Hi Friends Finally I succeed to design and create my first version of driver, and So far the circuit has nice performance. It is a fully self-dependent Driver (not controller), by means of: - It gets number of nozzles which are needed to be fired via Serial or SPI protocol (From a foreign controller...
by bigbomber
Fri Aug 19, 2016 8:52 am
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 555
Views: 352852

Re: Hacking the HP45

Actually, there are 22 addresses and the 12kHz relates to how often the entire head is triggered. This means that in 83us each primitive needs to pulsed not once but 22 times. I do like the idea of the 555 monostable circuit though. I will look into that. Yes, I know, there are 22 address and betwe...
by bigbomber
Fri Aug 12, 2016 4:47 pm
Forum: 3DP printing
Topic: Hacking the HP45
Replies: 555
Views: 352852

Re: Hacking the HP45

Hi Dear Friends and specially "Dragonator" I'm new to this forum but not new to 3D Printing method. I'm Mechateronics Engineer and very interested to Powder Based 3d Printer. Until now I've made a SLA 3d printer (but not using a DLP projector as every one know or a focused point laser) and works on ...