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July 09 2018

17:51

This 3D Printed Syringe Static Mixer Does It All

One trick for getting the bubbles out of freshly mixed 2-part epoxy, aka degassing, is to go over it gently with the flame from a propane torch. But both the mixing and degassing take time. [Gianteye] came up with a 3D printed dual-syringe static mixing system which speeds up the process.

Mixing tube interior Mixing tube interior

If you’ve bought those 2-part epoxy syringes available in stores before then you’ll know that they usually come with two syringes, each filled with one of the two parts to be mixed. Depressing the syringes causes each part to come out of its own tube. It’s then your job to mix them together and degas the result.

[Gianteye’s] system consists of 3D printed parts and two syringes.  Models for the 3D printing are available on his Thingiverse page and the syringes can be found online. Some of the 3D printed parts help you first fill and degas the syringes. You then attach a 3D printed mixing tube to the ends of the syringes. This tube serves two purposes. When the syringe’s plungers are depressed, both parts of the material are forced through the tube and extruded out. But on their way through, both parts pass through eight helices which form 180° turns and mix the parts together. Out comes the portioned, mixed and degassed material which can go straight into a mold or to wherever you need it.

The mixing tube was designed for one-time use but [Gianteye] discovered during an evaluation that it can be reused if you pull out any cured material and purge it. The evaluation involved silicone though. With hardened epoxy, you’ll probably have to use a new tube each time.

Check out the full details of his system in the video below, including both assembly and usage.

If you’re looking for a metallic look for something without wanting to cast metal than have a look at our own [Gerrit Coetzee’s] article about cold casting wherein he makes some very nice looking parts.

Reposted fromhackaday hackaday
mushu
17:49
6523 10ef
Reposted fromsmoke11 smoke11 viaHypothermia Hypothermia
mushu
17:49
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17:48
2151 7d8c 500

habitudee:

this makes me happy

Reposted fromBloodMoon BloodMoon viapaket paket
17:47

Dresdner Forscher überlisten Tracking-Punkte bei Laserdruckern

Drucker-Tracking: Dresdner Forscher entwickeln Verfahren gegen Überwachung

Mit einzelnen gelben Punkten verraten Laserdrucker viel über einen Ausdruck. Zwei Forscher haben die Methode analysiert und ein Gegenmittel gefunden.

Reposted from3we 3we viapaket paket
mushu
17:45
--eest9 on Twitter

Hope nobody discovers Metalabs classified white board contents.
Reposted fromreprap reprap viau-dit u-dit
mushu
17:43
Reposted fromgruetze gruetze
mushu
17:42
3155 6b99 500
Reposted fromkicak kicak viasofias sofias
mushu
17:41
Life...uh...finds a way
mushu
17:41
Reposted fromtgs tgs viaambassadorofdumb ambassadorofdumb
mushu
17:41
Reposted fromtgs tgs viaambassadorofdumb ambassadorofdumb
mushu
17:40
Reposted fromFlau Flau viaambassadorofdumb ambassadorofdumb
mushu
17:39
This is how a starfish flips itself back
Reposted fromtgs tgs viaambassadorofdumb ambassadorofdumb
mushu
17:34
Reposted frommangoe mangoe viagruetze gruetze
mushu
17:33
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Reposted fromAnalnyKarambol AnalnyKarambol viagruetze gruetze
mushu
17:33
Reposted fromtgs tgs viagruetze gruetze
mushu
17:33
mushu
17:29

July 08 2018

mushu
12:26
mushu
12:25
6926 ff65
Reposted fromtichga tichga viaambassadorofdumb ambassadorofdumb
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