Upfront Posted November 4, 2017 Author Share Posted November 4, 2017 Pity there is no other way because that process sucks! With any luck Sam, it will suck a lot! Link to comment Share on other sites More sharing options...
Auracle Posted November 4, 2017 Share Posted November 4, 2017 I was going to reply differently, but I would get banned. Incidentally, I have been thinking of a project recently that could hopefully (cost) involve modern composite materials that requires a vacuum process. Not sure if your setup can be adapted to it though. Link to comment Share on other sites More sharing options...
Upfront Posted November 4, 2017 Author Share Posted November 4, 2017 I was going to reply differently, but I would get banned. Incidentally, I have been thinking of a project recently that could hopefully (cost) involve modern composite materials that requires a vacuum process. Not sure if your setup can be adapted to it though. Recon we could try mate. What did you have in mind? Link to comment Share on other sites More sharing options...
Auracle Posted November 4, 2017 Share Posted November 4, 2017 How's your knowledge of carbon fibre and/or aluminium honeycomb sandwich? Link to comment Share on other sites More sharing options...
Upfront Posted November 4, 2017 Author Share Posted November 4, 2017 How's your knowledge of carbon fibre and/or aluminium honeycomb sandwich? Above average but not exceptional. 1 Link to comment Share on other sites More sharing options...
Auracle Posted November 4, 2017 Share Posted November 4, 2017 Ah! I think this may involve a clandestine meeting with a cuppa for me, and some other type of beverage for you. Talk soon. 2 Link to comment Share on other sites More sharing options...
Upfront Posted November 4, 2017 Author Share Posted November 4, 2017 Ah! I think this may involve a clandestine meeting with a cuppa for me, and some other type of beverage for you. Talk soon. Sounds good mate. Link to comment Share on other sites More sharing options...
Upfront Posted November 5, 2017 Author Share Posted November 5, 2017 Simple and solid. Vacuum chamber first attempt.... Hopefully the only attempt. I have some viewing panels coming. Link to comment Share on other sites More sharing options...
Upfront Posted November 5, 2017 Author Share Posted November 5, 2017 Now all I'm waiting on is the plumbing. 2 Link to comment Share on other sites More sharing options...
davewantsmoore Posted November 5, 2017 Share Posted November 5, 2017 On 04/11/2017 at 7:59 PM, Upfront said: On 04/11/2017 at 7:50 PM, Auracle said: Ah! I think this may involve a clandestine meeting with a cuppa for me, and some other type of beverage for you. Talk soon. Sounds good mate. Interested. I need a way to fabricate small horns. (y) Link to comment Share on other sites More sharing options...
Upfront Posted November 5, 2017 Author Share Posted November 5, 2017 Interested. I need a way to fabricate small horns. (y) Happy to help in any way I can mate. Any more detail? Maybe by pm? Link to comment Share on other sites More sharing options...
Upfront Posted November 30, 2017 Author Share Posted November 30, 2017 Slow going at the moment. But did manage to knock off early today and make a silicone seal for the vacuum chamber. Corn flour SiliconeFood colourSimple. 2 Link to comment Share on other sites More sharing options...
BioBrian Posted November 30, 2017 Share Posted November 30, 2017 The humour is not lost down here, mate . But your cryptic teasing is a test of patience! Cunning plan, says he... I've just had a dip in Mountain River: 31 degrees out, 17 degrees in, trying to ponder the significance of the 'blue dye fantastic' vacuum device. I suppose we all have a way of saying "I blue my horn". Sorry for shameless OT, the mercury's dropping fast and I always go a bit loopy. 1 Link to comment Share on other sites More sharing options...
Guest Posted November 30, 2017 Share Posted November 30, 2017 looks like fun Looking forward to seeing what you are going to ahhh, suck the air out of Link to comment Share on other sites More sharing options...
Upfront Posted January 3, 2018 Author Share Posted January 3, 2018 An update to the most boring thread on SNA...My lovely wife bought me some new drivers for Christmas, so in between holidays, visitors and the dreaded list I'm making a new pair of horns with a 2" throat for the new drivers. This time, using 2 layers of Unryu, Japanese mulberry paper, then around 14 layers of paper as before. Looking forward to seeing this one off the mold. 1 Link to comment Share on other sites More sharing options...
BioBrian Posted January 3, 2018 Share Posted January 3, 2018 54 minutes ago, Upfront said: An update to the most boring thread on SNA... My lovely wife bought me some new drivers for Christmas Interesting version of "boring" Linc. We should all be so lucky. Link to comment Share on other sites More sharing options...
Upfront Posted January 3, 2018 Author Share Posted January 3, 2018 Interesting version of "boring" Linc. We should all be so lucky. Boring because they all look the same on the photos Brian. Huge amounts of work and another photo of a spiral horn! I'm very happy with this one though. Can't wait to chop it back, cast it and hear these new drivers! 1 Link to comment Share on other sites More sharing options...
swervyn Posted January 3, 2018 Share Posted January 3, 2018 ZZZZzzzzz..... 1 Link to comment Share on other sites More sharing options...
swervyn Posted January 3, 2018 Share Posted January 3, 2018 What happened to the vac chamber? Link to comment Share on other sites More sharing options...
Guest Posted January 3, 2018 Share Posted January 3, 2018 4 hours ago, Upfront said: An update to the most boring thread on SNA... My lovely wife bought me some new drivers for Christmas, so in between holidays, visitors and the dreaded list I'm making a new pair of horns with a 2" throat for the new drivers. This time, using 2 layers of Unryu, Japanese mulberry paper, then around 14 layers of paper as before. Looking forward to seeing this one off the mold. Jeebas, nice looking drivers mate Did the piggy bank fall out of the cupboard into the Hobby Mate ?? Link to comment Share on other sites More sharing options...
Upfront Posted January 3, 2018 Author Share Posted January 3, 2018 What happened to the vac chamber? You were spot on with the vacuum chamber mate. Can only get about -6.5psi out of it. Not enough. So a second chamber is in the planning stage. 1 Link to comment Share on other sites More sharing options...
Upfront Posted January 3, 2018 Author Share Posted January 3, 2018 Jeebas, nice looking drivers mate Did the piggy bank fall out of the cupboard into the Hobby Mate ?? Ha! Na just a Mrs thats very good to me. Link to comment Share on other sites More sharing options...
swervyn Posted January 3, 2018 Share Posted January 3, 2018 @Upfront I made a frame once to make vacuum formed parts for rc aeroplanes, actually worked quite well. Acrylic heated in the oven then vacuum formed to the shape you wanted with a mould. Is there a sonic difference (better/worse) comparing your paper mache horns to say a timber or moulded plastic horn? Link to comment Share on other sites More sharing options...
Upfront Posted January 3, 2018 Author Share Posted January 3, 2018 [mention=111049]Upfront[/mention] I made a frame once to make vacuum formed parts for rc aeroplanes, actually worked quite well. Acrylic heated in the oven then vacuum formed to the shape you wanted with a mould. Is there a sonic difference (better/worse) comparing your paper mache horns to say a timber or moulded plastic horn? I've looked at making a thermoformer. But one project at a time! The difference between materials? No idea. That's how all this started. When I have a pair of paper horns I'm happy with, I'll be able to find out. ABS and fibreglass seem to be the most common as they are easy to make. Paper is ridiculously time consuming to get right. Carbon fibre will be next for me. How big is your vacuum former? Link to comment Share on other sites More sharing options...
swervyn Posted January 3, 2018 Share Posted January 3, 2018 15 minutes ago, Upfront said: I've looked at making a thermoformer. But one project at a time! The difference between materials? No idea. That's how all this started. When I have a pair of paper horns I'm happy with, I'll be able to find out. ABS and fibreglass seem to be the most common as they are easy to make. Paper is ridiculously time consuming to get right. Carbon fibre will be next for me. How big is your vacuum former? not big enough for your friggin horns! only about 200-250mm square from memory, good for forming rc plane cowlings and the like. As it turned out my skill in making parts far outweighed my skill in flying! 1 Link to comment Share on other sites More sharing options...
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