Really nice job. I’ve been using SW for 15years and would love to see your tutorial video. Always learning

@designbydave

8 ай бұрын

Always learning indeed. Thanks

I use 1/4" 3M green masking tape to lay out cut lines on carbon fiber. Forms to curves easily, and keeps the fabric from coming apart when you cut. Also helps to keep the tows together when laying the fabric in place.

@designbydave

5 ай бұрын

Thanks I'll check that out!

Great video and great job! I’d be keen to see a separate video on how you surfaced the part and mould tool in CAD.

@designbydave

9 ай бұрын

Cool maybe I'll work on that!

@UKJnr

9 ай бұрын

@@designbydave 🤞🏻 😃🤞🏻

Electric scissors can work with your template just lying in place on the carbon fiber as you had it. You don't need to lift the CF to be able to cut it.

@designbydave

4 ай бұрын

Yep, need a pair of those!

Very cool. Learning solidworks now, looking forward to being able to projects like yours!

@designbydave

Жыл бұрын

Sweet. Let me know if you have any questions.

Beautiful. Bling bling

@designbydave

Жыл бұрын

Thank you! Cheers!

Your technique is called VARTM Vacuum Assisted Resin Transfer Molding. You could print the lost core with a soluble material, mostly solid with small channels for resin flow. When the part is done dip in solvent solution and melt core away. If you design the channels right you might not need any pressure and get closer to full infusion. The part look good, let us see the next one👍

@designbydave

Жыл бұрын

I have experimented with soluble core materials in the past and they turned out to be significantly less soluble then one would want. It's pretty much a moot point however as we figured out how to make them hollow.

@genixia

Жыл бұрын

It might be a suitable shape for a cast silicone plug.

@designbydave

Жыл бұрын

@@genixia That might be a great way to produce this part. You'll see in a future video we figured out another trick.

Amasing job👍👍

@designbydave

8 ай бұрын

Thank you! Cheers!

That partall wax is the only one I’ve found that will wet the PVA, it’s key

@designbydave

Жыл бұрын

It's great but takes a long time to apply along with PVA. I think in the future I'll source a chemical release agent.

Please do make a video about how to make such parting lines in the CAD software. Learners like me will really appreciate the assist.

@designbydave

Жыл бұрын

Cool, I'll look into it

Perhaps a simple solution to the problem would have been plastic tubes or other material extensions that fit dimensionally to the carbon fiber tubes with modeling clay and create two part molds for the finished pieces. The number of hours spent using solidworks vs this suggestion is an obvious question as to where time was wisely spent.

@designbydave

7 ай бұрын

Ah but part of the reason for the project is to learn and expand our abilities. I indeed spent a lot of time in Solidworks but I learned some valuable new skills in the process.

@ULperformance

7 ай бұрын

@@designbydave Good argument.

I'm really not sure why you infused that. Your first half looked like how I wet lay-up my own design carbon fibre hydrofoil wings. And then you infused it. I just resin infused 30 layers of carbon fibre last weekend for my first carbon fibre hydrofoil mould and I did a lot of setup but with no resin. I also 3D printed a resin transfer core but with very controlled position release holes. I infused with the mast leading edge down so the resin filled downwards then backfilled to the trailing edge and all the base plate perimeter. I used river table resin for it's long pot life. The infusion was a success but a lower viscosity resin would have been better.

@designbydave

Ай бұрын

Two reasons. First because we didn't have a way to add compaction to remove trapped air. The vacuum + infusion serves to drive out all the trapped air (in theory.) Second, just to see if we could. Yes, a lower viscosity, infusion specific resin would be better.

@fluiditynz

Ай бұрын

@@designbydave It's a short infusion path. Pretty simple solution. peelply inside. Run a tube through into the vacuum bag and inside, seal it to a long balloon run through inside your mould. This allows atmospheric air pressure to push your carbon against the mould. Run your infusion hose through small diameter spiral wrap at the bottom of your mould with another layer of peelply between the balloon and the inside of the peel ply protected carbon fibres. Seal off your resin pipe and test. To properly complete it, you need the peel ply to extend out some way from the mould as a resin brake and have an extension of something similar to let the resin move only slowly to the vacuum outlet from the bag, I wrap that in paper towels. I haven't done it that way before but it will work. Use a big balloon so it has enough stretch. I've done maybe 12 infusions over the last 2 years, the resin running out, the resin sucking to the pump, early stuff you will find good work arounds for. In particular, the concept of a resin brake.

@designbydave

Ай бұрын

@@fluiditynz Cool, might have to give that a try

silver or gold sharpie for marking on carbon fibers

@designbydave

Жыл бұрын

Tried the silver. It did nothing. I'll have to find a gold one.

This is awesome, do you have some source for diy mold design?

@designbydave

Жыл бұрын

What do you mean, like a tutorial?

@lalilaloe

Жыл бұрын

@@designbydave yes

@designbydave

Жыл бұрын

@@lalilaloe I don't have a specific source. There are many sources for how to use the mold design tools in Solidworks, like the parting line tool I mentioned in the video. There are some specific mold design considerations for this application though that relate to the 3D printing and process method. Perhaps it's worth a video about that. I would like to iterate on these specific molds though and improve a few things.

nice

@designbydave

Жыл бұрын

Thanks for checking it out.

I'm just waiting for the day you Tony Stark your way out of a cave.

@designbydave

Жыл бұрын

"TONY STARK BUILT THIS IN A CAVE WITH A BOX OF SCRAPS!"

how is this different from vacuum infusion?

@designbydave

Жыл бұрын

Pretty much the same except the resin is pressurized

@genixia

Жыл бұрын

@@designbydave I don't see how that helped though. He should have vacuum degassed the resin, then vacuum infused. I think he would have ended up with less resin on the wrong side of the mold.

@designbydave

Жыл бұрын

@@genixia Yeah, to be clear, I'm not really sure the extra pressure is necessary either. It's just that you typically see resin infusion used on "single sided" parts, not tubular geometry like this. It's probably worthwhile to attempt a part without the additional complexity of the pressure pot. Maybe in the future.

silver sharpie

@designbydave

Жыл бұрын

Tried that and all color of sharpie to to avail

@crumptoncycles

Жыл бұрын

@@designbydave Must be the sizing on dry fiber. I use em on prepreg all day long.