Tried adding 96oz of maltodextrin to the mix.
I got much finer details, but the maltodextrin needs a much higher saturation that I was running - resulting parts were very 'dusty' and crumbled easily.
I'll continue to refine the process...
Search found 112 matches
- Mon Feb 15, 2016 2:59 pm
- Forum: 3DP printing
- Topic: Material Research: Sake + Sugar/Meringue Powder
- Replies: 9
- Views: 31284
- Sun Feb 14, 2016 5:18 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2922352
Re: Hacking the HP45
Some thoughts: Do you have an HP45 printer where you could 'vampire' a scope into the control signals for the head? HP thermal jetting timing is super picky - and it's ridiculously easy to blow out an inkhead by holding it in 'heater' stage for too long (lesson learned when I forgot to remove my HP ...
- Fri Feb 12, 2016 3:02 am
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2922352
Re: Hacking the HP45
Exactly - the FIFO is there to 'relax' the micro's IO servicing timing requirements.
Otherwise, the micro is at the mercy of the dot clock of the printhead - something I learned painfully with BrundleFab.
Otherwise, the micro is at the mercy of the dot clock of the printhead - something I learned painfully with BrundleFab.
- Thu Feb 11, 2016 8:29 pm
- Forum: 3DP printing
- Topic: Metamaterial: Wax Foam
- Replies: 3
- Views: 10309
Re: Metamaterial: Wax Foam
Ok, CA may be a fail.
Only penetrated about 1mm into the object, and pretty much fell apart after immersion.
If I had a vacuum pot, I'd try epoxy.
Only penetrated about 1mm into the object, and pretty much fell apart after immersion.
If I had a vacuum pot, I'd try epoxy.
- Thu Feb 11, 2016 7:54 pm
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2922352
Re: Hacking the HP45
With the FIFO, you just have to consider bursts. For example, assume you have the following: 1) A Cortex3 ARM micro with a 50Mhz SPI (32-bit wide buffer) bus 2) A serial to parallel demux 3) A FIFO chip with EMPTY, FULL, and HALF_EMPTY signals There are two buffers pointers in the ARM: * NEXT_TO_PRI...
- Thu Feb 11, 2016 7:42 pm
- Forum: 3DP printing
- Topic: Powder Handling: Vortex Dust Collector
- Replies: 4
- Views: 15254
Re: Powder Handling: Vortex Dust Collector
It worked pretty well with the short (~5kg) ZP-150 test I gave it. I'm going to wait till next Wednesday to pop the bag open for the sugar powder test of the vortex. The majority (95%) of the powder went into the bucket, and there seemed to be no appreciable difference between the texture of the dus...
- Thu Feb 11, 2016 12:38 pm
- Forum: 3DP printing
- Topic: Powder Handling: Vortex Dust Collector
- Replies: 4
- Views: 15254
Re: Powder Handling: Vortex Dust Collector
I've just started a long-term trial with it with my sugar powder - I'll be able to get a good feel for the separation characteristics in a week or so.
- Thu Feb 11, 2016 12:37 pm
- Forum: 3DP printing
- Topic: Metamaterial: Wax Foam
- Replies: 3
- Views: 10309
Re: Metamaterial: Wax Foam
I don't see why you couldn't do the same with CA or epoxy, since the sugar is a fully bonded matrix throughout after it's fully cured, and will be able to be fully removed after infiltration.
I'll have to try that with a small sample object.
I'll have to try that with a small sample object.
- Thu Feb 11, 2016 12:35 pm
- Forum: 3DP printing
- Topic: Hacking the HP45
- Replies: 757
- Views: 2922352
Re: Hacking the HP45
Basically, you need something like this: http://www.ti.com/lit/ds/symlink/sn74act7806.pdf An asyncronous uni-directional FIFO memory (they come in larger sizes than 256x18, this is just an example). You tie the 'write data/write clock' side to the microcontroller, the 'read data' side to the printhe...
- Thu Feb 11, 2016 2:49 am
- Forum: 3DP printing
- Topic: Metamaterial: Wax Foam
- Replies: 3
- Views: 10309
Metamaterial: Wax Foam
So, I found a novel new meta material. I was impregnating some of my sugar powder models with wax, and wanted to test the water resistance of the final result. So I left some small pieces to sink to the bottom of a glass of water, and forgot about them. Two days later, the pieces were floating. Odd,...