/r composites – The beginning of the end for vacuum bagging? (+ bonus headscratcher)

The “VARTM-UltraLite Toolless Infusor”© 2 March 2025

Introducing my “VARTM-UltraLite Toolless Infusor” invention, world-wide first look & I chose this community as the most appropriate place to break the news (as a bubbly mammoth which I will probably have to delete to rename!!)

So, The beginning of the end for vacuum bagging?

I don’t do clickbait so

  1. Not in all cases
  2. Still “much more work to be done” but it continues to be promising – no overcomable barriers encountered yet (although I have known my share of despair at times)

NLC’s “VARTM-UltraLite” invention is a silicone membrane incorporating precisely engineered resin racetracks, vacuum channels, flow media & especially designed clamp-free ports. It took over 3 years and many dozens of iterations & £/$ 1000s to get it to this level of perfection.

The moon’s atmosphere on your kitchen table.

So I continue in my many disrespectful tests of one of our more notable “VARTM-UltraLite”© inventions (many more in the brain/pipeline) This is about the 5th in a series which is waiting to be edited for YouTube.

  • All pieces 2 layers, 200gsm to 300gsm
  • Around 1KG of our ultra-slow infusion resin was used – approx 125g +50g removed = c800g in all within the cloths) Confession, I actually used bits of B2,B4 and some of the leading brand’s hardener as I Can’t Be Arsed (that wasn’t on reddit, so it wasn’t that which caused the post problems) to refill the bottles.

Lessons learnt:

  • If anything can go wrong it will – this time some resin got out of one of the inlet cups and is now a feature of ANOTHER carpet
  • Don’t use multiple hardener speeds, it’s mad science
  • Don’t have the top layer as release film, it’s better to have a sacrificial/bonus top layer of cloth to better pull away resin from the channels, saving turnaround-to-next-reuse time

Kickstarter Participants

If anyone is interested, I am looking to vet Low-Maintenance Friendly Enthusiasts that can keep a secret better than me to participate in serious trials, including male & female moulding – it stretches reasonably well :).

I’ve seen a lot of 3D Printer reviews & the reviewers get 1st access in return for working closely with the manufacturer – well, like that.

  • I’m in the UK & ultra-small, although that will probably change very quickly.
  • I’d like to be setting up another shop in the US by fall, as you call it.
  • We’ve got excellent trade relationships > 3 years & supply pretty advanced infusion resins, cloths & foams
  • I set up because I got rejected by the big boys to get better than retail pricing for 2000m of cloth and 600Kgs of resin, so during the launch we have a mates rates philosophy – unprofessional prices for unprofessional but friendly & honest service

HEAD-SCRATCHER (Answers on a postcard please) :

Now, the picture (above) has layers arranged bottom to top as actually infused. The carbon was on the metal base, the UHMWPE nearest the “VARTM-UltraLite Toolless Infusor”, with perforated release film between each layer. There are questions that I can probably only ask those selected for the trial, but here’s one that has me scratching my head:

The Carbon Fiber that was on the bottom has a 25-30mm void, it had 4 other layers of double-thick 200-300gsm cloth above & alternating perforated release film,
So how can it be that

  1. It is the only layer with a void directly under the port when all layers above have no void
  2. The bottom of the void is dry, the top of the void is dry, yet the cloth is partly infused in the middle (tap-test-it’s definitely not dry cloth all the way through
  • I hope to be a positive contributor to this community
  • I hope to find some new mates than can do a friendly test & review of the “VARTM-UltraLite Toolless Infusor”©, 1st in the UK & ASAP over in the land of newly arrived commonsense and care & pulse-check emails
  • I hope to change my reddit user name, or hope to learn to live with ithad trouble with reddit d

Answers via reddit please – this never needed to be put on the website

James (Mad Scientist) – Yeah, non-redditors probably won’t get that either 🙂

The video will have to wait in a long line for editing & uploading to the YouTube Channel – which only had a test kevlar scissor video prior to having to use it as a reddit work-around to give it a new 12 second resin trap video

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