Search found 20 matches

by maxt
Tue Sep 03, 2019 6:04 pm
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 132
Views: 27105

Re: Hacking cartridge HP 84/85

by the way, I think that a driver for this head would be very easy to adapt also to HP11 heads (C4810A, the ones used by 3DSystems Projet660 - definitely suited for 3DPP). Same number of pins and from the photos they look *exactly* the same, both outside and inside :lol:
by maxt
Sat Aug 31, 2019 4:00 pm
Forum: 3DP printing
Topic: Hacking cartridge HP 84/85
Replies: 132
Views: 27105

Re: Hacking cartridge HP 84/85

I'm wondering if the teensy 4.0, being so much faster, still makes DMA a requirement for faster printing with the HP45.
Maybe the current firmware just becomes fast enough ?
by maxt
Wed Aug 21, 2019 4:26 pm
Forum: 3DP printing
Topic: Firmware for 3DP printing with 2 powder station.
Replies: 7
Views: 326

Re: Firmware for 3DP printing with 2 powder station.

We need two powder station because a part of the team is studying the possibility of using two different powder to make a object, spreading out one layer of each powder at time, opening possibilities to make objects with differents compositions. yes, but you will still have an entire layer of the s...
by maxt
Tue Aug 20, 2019 11:09 am
Forum: 3DP printing
Topic: Firmware for 3DP printing with 2 powder station.
Replies: 7
Views: 326

Re: Firmware for 3DP printing with 2 powder station.

Unfortunately I'm not aware of piezo heads, other than the XAAR 128, that can be controlled by open source controllers. I did some search on the Ricoh gh2220, there are a few companies selling controllers for it, but you won't get any direct control over the nozzles. Why do you need two powder stati...
by maxt
Tue Aug 20, 2019 11:03 am
Forum: 3DP printing
Topic: PowderMaker1 3DP printer
Replies: 21
Views: 3239

Re: PowderMaker1 3DP printer

thank you for sharing the updates.
May I ask you where did you get the technical info about the epson printhead ? or are you reverse engineering it ?
by maxt
Fri Jun 14, 2019 7:44 am
Forum: 3DP printing
Topic: The Z400 adventure
Replies: 10
Views: 1973

Re: The Z400 adventure

the percentage of tween 20 is around 0.2% - 0.3% of the water/alcohol volume. Something like 10 to 15 drops every half a liter
by maxt
Thu Jun 13, 2019 11:13 am
Forum: 3DP printing
Topic: The Z400 adventure
Replies: 10
Views: 1973

Re: The Z400 adventure

I am not yet at the point of throwing the powder away, but it is odd. The part is not really brittle. After a day of drying, the part can easily be handled. It is just that the binder bleeds significant amounts (2-3mm), completely ruining the part. I tried reducing the saturation, but that did noth...
by maxt
Tue Jun 11, 2019 5:16 pm
Forum: 3DP printing
Topic: The Z400 adventure
Replies: 10
Views: 1973

Re: The Z400 adventure

Hi Dragonator, saw your blog post on the first print, well done ! if you're using zcorp powder then the water/alchool binder should be just fine. If you got a brittle part this should be related to the quantity of binder ejected. Probably not enough. Don't know if the control SW allows you to regula...
by maxt
Mon Jun 10, 2019 3:11 pm
Forum: 3DP printing
Topic: PowderMaker1 3DP printer
Replies: 21
Views: 3239

Re: PowderMaker1 3DP printer

Hi david maxt, thanks for your input. Re the commercialisation, it is a bit early to tell as I'm not sure about the total cost and the actually performance it can pls keep us posted on the progress. Regarding the powder, it's pretty expensive, unfotunately. List price is around 80€/Kg and it's only ...
by maxt
Sat Jun 01, 2019 1:49 pm
Forum: 3DP printing
Topic: Hacking the Xaar 128 printhead
Replies: 280
Views: 126559

Re: Hacking the Xaar 128 printhead

And maxt, I have just been using an Arduino Mega which can output 5V. I Branden, thanks, I know about arduino, however if I do this it has be a full color printer. I.e. 5 heads. I rule out arduino cause I doubt it would be able to drive and synch all of these heads. Some recent teensy (3.3V) should...