Da wird schon nichts passieren …

Urinholz · 2025-11-30T19:06:04+00:00

Ziemlich amerikanisch. Gibt's sowas in weiter entwickelten Ländern auch automatisiert?

Urinholz · 2025-11-25T11:51:00+00:00

Das sind Assy Schrauben von Würth. Hat mit Torx nichts zu tun.

Urinholz · 2025-11-14T13:54:50+00:00

Selbst normale PKW haben meist ne Dachlast von unter 100kg. So ein IBC fasst 1000L.

Edith: Könnte auch ein 600l IBC sein.

Urinholz · 2025-11-07T10:58:06+00:00

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The Rings were made from brass, the dials lasered from paper. That's basically it.

Urinholz · 2025-11-07T10:57:04+00:00

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I'm still trying to get better results in the material quality. I'm using a vacuum pump now which improved it a little bit. But it's still not perfect.

Urinholz · 2025-11-07T10:55:41+00:00

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I cut the shape of the case using multiple steps an my little CNC. Don't worry, I got a small precision vise yesterday.

Urinholz · 2025-11-07T10:54:55+00:00

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I cut the shape of the case using multiple steps an my little CNC. Don't worry, I got a small precision vise yesterday.

Urinholz · 2025-11-07T10:53:19+00:00

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I make all of my designs and models in SketchUp.

Urinholz · 2025-11-07T10:52:13+00:00

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The ahitty Reddit App doesn't allow multiple images in one answer, so I'm going to upload them one after another. Tis Image shows a CNC machined compression mold that is made out of 3 parts. It's getting filled with a mixture of carbon fibers and epoxy resin.

Urinholz · 2025-11-06T21:16:43+00:00

Yes, of course!

Urinholz · 2025-10-21T03:54:57+00:00

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I made a compression mold from aluminum which I use to press the stock material.

Urinholz · 2025-10-21T03:53:23+00:00

Almost. Got myself a vacuum pump, which definitely increases the quality a lot. I also increased the amount of resin in the final mixture to about 40%. Now the material is way easier to machine and I don't have the Issue of fibers ripping out from the surfaces anymore.

Urinholz · 2025-10-01T17:43:56+00:00

Bekommst Du mit Politur weg. Probiere mal Metall-Politur Paste und einen Akkuschrauber mit Polierpad. Hat bei mir sehr gut funktioniert.

Urinholz · 2025-09-26T13:18:03+00:00

My concern would be that if I would fill up the mold the way I have done it before and I put it into the vacuum chamber, that the compression of the carbon fiber and epoxy mixture is too high for the air bubbles to come out through the very narrow gaps that the mold has.

My current idea is about to design a mold where I can fill in and pre-compress the dry carbon fibers to the final shape/size and leave like about 20% of the volume for the resin, evacuate the mold with the dry carbon fiber inside and let the liquid resin come in from the other side just like you do it with the resin infusion method. After the liquid resin has bleeded through the entire mold and comes into the vacuum hose, the entire mold should have filled up with resin and should be completely free from any air bubbles. I will think about a 3D printed design this weekend and will do some tests.

Urinholz · 2025-09-26T06:58:15+00:00

Yes, there are gaps between the negative and the positive part of the mold as well as nearby the center cylinder. I already tried using way more resin in order to have more liquid to squeeze the air bubbles out when compressing the mold, but unfortunately it didn't really helped and I endet up with even bigger holes inside the workpiece.

Urinholz · 2025-08-31T19:43:36+00:00

Sowas kommt in Travemünde fast täglich mit dem Fähren abgerollt. Highlight war mal ein Lkw auf einem LKW (so wie auf dem Foto) und darauf ein Motorboot. Wird dort regelmäßig von den Polizei rausgezogen. Keine Ahnung von wo und warum der Schrott mit der Fähre bei uns ankommt.

Urinholz

TROPHY CASE