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On a select # of products, we have an MOQ set to 200pcs as those products we procure generally from overseas rather than make them ourselves. They are often denoted with a "-DL" suffix on their SKU number. If you search however the first 5 digits of that same SKU (example: 45558 instead of 45558-DL) you will find the version of that tube that we build and is available in qty of 1.

Glad you like it!

Great idea. We should be doing some refreshed videos in the near future.

The process is the same. You can carefully insert your part into the bag if you choose to close 3 sides first, or you can leave the bag open and then close the 3 or 4 sides after the part is in place. This is very common for large parts that are hard to move around. The thing to remember is that if you get epoxy resin on your bag were the tape seals, it will never stick and you will have to replace the bag.

Of these radome parts unfortunately we do not plan to as we didn't document such. We could add it to the list to provide however!

@@RockWestComposites thank you sir🙏

You're welcome 😊

I can even set-up a manufacturing unit in Vapi, Gujarat, India and do your jobwork/contract manufacturing to reduce costs.

That is ALOT of internal pressure. Sadly we will not have a tube suitable for those levels.

I found one , thanks though@@RockWestComposites

We are pulling about 24 inches of mercury here in Salt Lake City, UT.

Good afternoon Kenny, Interesting question and the short answer really is no since every piece of equipment used can vary enough. Do you have equipment to do so already?

Hello! importing is mental, agreed. however fabricating by hand without the equipment is also kinda mental and likely more expensive than the former. There is no easy answer for direct swap of AL to CF howoever we can share the in general, CF will be 30% stiffer and about 30% lighter given no dimensional changes otherwise from AL. MEEEOW :-)

We know this well. Many of our employees have a small stash in their garage for random projects ;-)

That would be an epic ceiling tile. If you do it, please share pics!!

Great idea. Have added links in just now.

Thanks!@@RockWestComposites

Rounding up to 30 in/Hg from 29.9 seems to be an acceptable answer when using an analog gage.

If done properly...

If only we could please everybody...

Pressure vessels are a function of fiber orientation, so depending on the internal pressure you need, will determine the layup you will need. You are commenting on the the roll wrap and pultrusion video, but you would be much better off with a filament wound tube designed for pressure. With filament wound tubes we can use hoop plies to increase burst strength. Send us an email and we can help you get started to know what kind of layup you need for your application.

Flexible or stretch bag is ok if you need to conform to some troublesome features, but it can be difficult to use and my have leak issues. With infusion, the stretch can cause issues with the flow media by conforming too much to the media and not allowing the resin to flow as needed. It can also stretch in the opposite direction and not give as much compaction force while the resin is flowing, which in turn will slow the flow of resin through the bag. I always prefer non-stretch bag for every application. A well placed bag shouldn't require any stretch bag to conform to the features of the part.

Thanks for the feedback. We really appreciate it.

This was only a demonstration of the vacuum bagging technique. We weren't trying to demonstrate the layup process, only the different types of vacuum bagging styles that you may need to use. In a standard layup vacuum bag setup, you would follow this stack-up: 1. Mold surface 2. composite layup 3. Peelply (sometimes optional) 4. Perforated -OR- non-perforated release film 5. Breather fabric 6. Vacuum bag film As for "stretchable" materials, you should never rely on any materials to stretch. You should always place all materials into the corners, as tight as possible, before vacuum bagging. As I tell all my students, "A vacuum bag is not a magic wand for perfect parts". There is stretchable peelply and stretchable vacuum bag, but your carbon fiber or fiberglass layers are not stretchable, AT ALL, so never rely on stretch to accomplish the impossible. There are some reusable vacuum bags made out of latex, but these are expensive and generally used to decrease the labor of vacuum bagging and not for fool proofing the vacuum process.

@@RockWestComposites thanx for your response, info and recommendations! however I have in mind a particular profile for panels that can be made only by a stretch-deep-drawing-process. and for that I will need stretchable reinforment (for prepregs) - which exists in the shape of knitted glassfibre-fabrics - and - at best - all the other materials stretchable. so I'd be grateful for any links, because via google I didn't find anything (easily)...

I've worked extensively with knit fiberglass, but it isn't what I'd call "deep draw". it will stretch and conform about 2x. There is stretchable vacuum bag and peel ply, but again, not deep draw, just enough stretch to help mitigate bridging in vacuum bagging.

@@RockWestComposites thanx for answering! what do you mean please by "it will stretch and conform about 2x."? that the original length can be doubled? that would be quite sufficient for (at least some considerable) 'stretch-deep-drawing'! / could you tell me where you got it from? I found only chinese producers, but they don't answer when I ask for the samples they offer...

Not quite sure what you are referencing. Can you explain further?

@Rock West Composites I have a trike that I'm modifying. Where the current back seat is I'd like to put a box to store things. Thinking of making foam mold to fit the complex curves. Can I vacum bag this box mold to create the form I need?

I've never tried it as a release agent, so you should proceed with caution. The biggest question is whether or not the resins will interact with it, or if heat changes it. As Rain-X is designed to be somewhat hydrophobic, it's designed to repel water, but how it interacts with other materials is unknown to me.