Martian Posted July 19, 2017 Share Posted July 19, 2017 3 hours ago, Ex-FAAWAFU said: The tininess is purely the reduction to 1/72. Even my behind appears quite svelte when shrunk to a seventy-tooth of its real girth. Can we leave your bottom out of this Crisp, some of us have yet to eat! Martian of the Churning Stomach 4 Link to comment Share on other sites More sharing options...
perdu Posted July 19, 2017 Author Share Posted July 19, 2017 Martian do you happen to know whether I need dark sea grey for the cockpit? I know you have extensive knowledge of these things and I'd appreciate your advice 1 Link to comment Share on other sites More sharing options...
keefr22 Posted July 19, 2017 Share Posted July 19, 2017 Didn't Navy Bird Bill use Light (?) Admiralty Grey in his S1 build Bill?Only going from memory mind, so could well be wrong... Keith 1 Link to comment Share on other sites More sharing options...
Hamden Posted July 19, 2017 Share Posted July 19, 2017 Those seats are absolute stunners! Looking forward to seeing the resin result Roger Link to comment Share on other sites More sharing options...
perdu Posted July 19, 2017 Author Share Posted July 19, 2017 Thanks for the reminder, the pictures in the Navy Bird thread show quite clearly that the walls etc are indeed Light Admiralty Grey-alike cheers Keith Well That is it The new seat is in the hands of the chemists... This is the sealed Legoalike box ready for some latex Walls, floor and outsides sealed with all sorts of bodges The seat is to be quite a tight fit, latex saving mode on... here we go let's whip some bubbles up huh I do not want tiny bubbles trapped alongside the buck so I have tried preloading the buck with debubbleised latex first It looks like a little pink 'long blob' at the moment The pictures of 'bombs away' didn't work out, missed all the direct dropping into the hole so I've concentrated on finishing the job, here we have the buck held static in the mould with a mildly vibrating toothbrush That doesnt work very well I susoect This was me attempting to vibroeject bubble Wasn't working very well Oh well as I said Chemistry now in charge Oooer missus 9 Link to comment Share on other sites More sharing options...
Martian Posted July 19, 2017 Share Posted July 19, 2017 4 hours ago, perdu said: Martian do you happen to know whether I need dark sea grey for the cockpit? I know you have extensive knowledge of these things and I'd appreciate your advice I thought it was Dark Admiralty Grey but I stand to be corrected on this. Latex action eh? That will guarantee Ced's appearance in a shot! Martian 2 Link to comment Share on other sites More sharing options...
keefr22 Posted July 19, 2017 Share Posted July 19, 2017 49 minutes ago, Martian Hale said: I thought it was Dark Admiralty Grey but I stand to be corrected on this. I think you are probably right M, it was why I stuck the question mark after Light, memory is not what it was & it was a 50/50 choice...! K 1 Link to comment Share on other sites More sharing options...
perdu Posted July 19, 2017 Author Share Posted July 19, 2017 Just been down to the casting facility Chemistry working pink slime going nicely rubbery (cue Benny Hill) Link to comment Share on other sites More sharing options...
CedB Posted July 20, 2017 Share Posted July 20, 2017 (Oh good grief, they're comparing bottoms now! Ahem...) Latex action - yeah baby! (That reaction was just for Martian, I'm seriously interested, honest!) Bill where did you get your 'various bodges' from? I need to order some, obviously... The brush might work better if you take off the brush bit and just press the metal bit against the Lego - that's what I did and the bubbles seemed to come out in a few minutes. I think the bristles might be cushioning the vibration effect. More joint experiments needed... 3 Link to comment Share on other sites More sharing options...
perdu Posted July 20, 2017 Author Share Posted July 20, 2017 That does sound much more like it My brush has emery paper glued to it instead of nylon bristles Difficult to get between the teeth but across em? Magic our Ced Next time I'll give it a try The chemistry? Worked a treat Just been in to deLegoalike the rubber bit Looks good so its all down to the resin now I'll photomegrape the resin going in process for number one then get it postimage.orged and on screen Expect the exit poll around mid-day. ⌚ 5 Link to comment Share on other sites More sharing options...
perdu Posted July 20, 2017 Author Share Posted July 20, 2017 Well here we are again First thing this a.m. Rubber nice and rubbery, time to demount the Legoalike Dismantlement for the sake of breaking something, guess whose take on the method that is... the writing on the baseplate shows me which end is the back of the seat so I can cut the rubber away to allow easy extraction Like so, you can see little bits of latex that got stuck to the buck, we'll see if this affects the casting much/any later Resin time coming up, yes that is me in those sexy gloves Part A the cup got 6mg first Then it got 6 more of Part B Which was then whizzed around and decanted into a small syringe with a wide holed needle on it, then deposited into th ebase of the mould, wriggled around for a bit whilst being lifted up out of the mould which was put aside to cure, no don't do the one "I didnt know it had been ill", it wasn't good first time around This is the twenty minute bodge test, seeing whether the resin had begun hardening yet, It had smile for the camera Mr Seatymcseatface, not entirely happy but there isn't a lot to sort out before I use this An air bubble in the seat back cushion, a couple of resin bubbles to pop off, quite easy really phew A small void under the seat cushion too A blob to extract from the seat back parachute pack hole (straps come through there on the proper seat) fair enough on this side though OK here too I will bung a couple more through and see how they run Of course I may need to recast, good job I saved some latex Looking for Dark Admiralty Grey now, I have a cockpit to paint, detail and close up Somebody said Tamiya 63, hmm not convinced but I don't want Humbrofix 6 Gloss Grey, this won't be dry by Christmas if I use that 12 Link to comment Share on other sites More sharing options...
CedB Posted July 20, 2017 Share Posted July 20, 2017 Nice Bill, very nice. Black SWAT gloves nicely offset by the pink scales - very clever... in the event of a raid they'll definitely not suspect anything. 3 Link to comment Share on other sites More sharing options...
perdu Posted July 20, 2017 Author Share Posted July 20, 2017 I hope you feel happy now you have rumbled my secret plan to get away with it You pesky kids blah blah submarines secret plans spies blah blah pesky kids blah OK I'll come clean, the scales were intended for the governor to use in the kitchen but she didn't take to them "My old Salter Scales is good enough for me I've used them for fifty years why don't you like the food I slav......." etcetera etcetera So I appropriated them for the use they are ideal for, they adjust for tare so I can zero them with a plastic cup on, and everything Pretty good kit, emphasis on pretty in pink It seems I mean Humbrol 5 not Humbrol 6 dohhh! 3 Link to comment Share on other sites More sharing options...
Martian Posted July 20, 2017 Share Posted July 20, 2017 24 minutes ago, perdu said: I hope you feel happy now you have rumbled my secret plan to get away with it You pesky kids blah blah submarines secret plans spies blah blah pesky kids blah Do we get Scooby Snacks then? I have to say I am rather taken with these seats. Maybe you really should knock a few more off to sell to those looking for decent Buccaneer seats in this scale. Martian 2 Link to comment Share on other sites More sharing options...
giemme Posted July 20, 2017 Share Posted July 20, 2017 I do like the resin seat, great job Can't wait to see it painted I'm also pretty undecided as to what is sexier between the black gloves and the pink scale ... Ciao Link to comment Share on other sites More sharing options...
keefr22 Posted July 20, 2017 Share Posted July 20, 2017 5 hours ago, Martian Hale said: I have to say I am rather taken with these seats. Maybe you really should knock a few more off to sell to those looking for decent Buccaneer seats in this scale. That is a fine idea, oh alien one..... R U listening Bill...?! Keith 2 Link to comment Share on other sites More sharing options...
keefr22 Posted July 20, 2017 Share Posted July 20, 2017 4 hours ago, giemme said: I'm also pretty undecided as to what is sexier between the black gloves and the pink scale ... I find that statement slightly worrying Giorgio....!! Keith 2 Link to comment Share on other sites More sharing options...
hendie Posted July 20, 2017 Share Posted July 20, 2017 excellent job on the seats Bill. When I'm casting I generally fill about 75% then have a rummage around inside the mold with a cocktail stick trying to ensure that I poke into all those hard to reach crevices and wotnots, then top up with the remaining 25% It can be a bit of a challenge in this heat where I find that the resin starts to go off in around 60 seconds, but it seems to help eliminate some of those bubbles and voids on the finished part 1 Link to comment Share on other sites More sharing options...
giemme Posted July 20, 2017 Share Posted July 20, 2017 28 minutes ago, keefr22 said: I find that statement slightly worrying Giorgio....!! Keith You know, me too ... Ciao 3 Link to comment Share on other sites More sharing options...
perdu Posted July 20, 2017 Author Share Posted July 20, 2017 That is the basic method I use too Hendie, it worked better with this evening's fill As you can see there were still some bubbles to whip off but on the whole the second one has filled better than number one, a reversal of the 'usual' scheme of things still a little void under the left seat pad but nothing we cannot model out of it Lots of free little "touch me and I fall off" bubbles to clear out The improvement shows as we move from left to right The back pad is full this time and the seat looks better I'll be cast-filling a few of these, Gareth wants a couple don't you G Keith and Martian I appreciate the compliment but these are nowhere near commercial after-market quality and each one will need some cleaning up How cheap would they have to be? 5 Link to comment Share on other sites More sharing options...
keefr22 Posted July 20, 2017 Share Posted July 20, 2017 Couple of coffees at Telford?! 2 Link to comment Share on other sites More sharing options...
perdu Posted July 20, 2017 Author Share Posted July 20, 2017 (edited) I'd buy you a coffee anyway you daft beggar There will be resin there for you after all, so? Just a thought Will the Mini be at Telford like my garage workbench will? Edited July 20, 2017 by perdu 1 Link to comment Share on other sites More sharing options...
giemme Posted July 20, 2017 Share Posted July 20, 2017 Looking better and better, Bill Would a vacuum chamber help in both mould making and resin casting? (I'm definitely going to look for a suitable supplier of this moulding stuff when I get back from my hols) Ciao 1 Link to comment Share on other sites More sharing options...
perdu Posted July 20, 2017 Author Share Posted July 20, 2017 I will be trying to build a vacuum chamber Giorgio, the removal of unwanted bubbles from the latex is a high priority for me For filling with resin a few applicator needles for hypodermic injectors is important and as Hendie just mentioned a few cocktail sticks to encourage the resin to find little corners and crevices The mixtures of rubber and catalyst and two part resins means using a scales (even pink ones) is useful but I have even succeeded by estimating the amounts of each If you get the resin mix slightly wrong you might find it leaves the mould in a bendy state, leave it aside and it will harden (A benefit to bendy resin is it is feasible to cut the mould fill block away with a modelling knife whilst soft, a property I enjoy using better than sanding the stuff away) 3 Link to comment Share on other sites More sharing options...
Fritag Posted July 21, 2017 Share Posted July 21, 2017 (edited) 23 hours ago, CedB said: The brush might work better if you take off the brush bit and just press the metal bit against the Lego - that's what I did and the bubbles seemed to come out in a few minutes. I'm with Ced on this one Bill. My old brush had a removable brush head and I pressed the mounting stump on the body into plasticine stuck to the bottom of the Lego mould. Like Ced I thought that the bubbles seemed to come out. I'm looking forward to seeing your pressure cooker vacuum chamber tho' - definitely a better solution. 9 hours ago, hendie said: I generally fill about 75% then have a rummage around inside the mold with a cocktail stick trying to ensure that I poke into all those hard to reach crevices and wotnots, then top up with the remaining 25% I've stopped using a cocktail stick cos I'm a bit cackhanded and was prodding little flaws into the moulds........I've also stopped using a syringe cos I'm too lazy too clean it out each time...... Wot seems to work for me is to mount the master on a generous sized plug of plasticine when I make the RTV mould and that then means I have a generous space for a 'reservoir' of liquid resin when I pour it into the mould. When I pour in the liquid resin I then quickly squeeze the mould several times from different sides of the mould to expel the air bubbles - which are then replaced by resin drawn down from the reservoir, If need be I pop the air bubbles in the reservoir using a cocktail stick to prevent them being drawn back down into the mould. Seems to work pretty reliably - altho' absent a pressure chamber I don't think you'll ever get a 100% success rate. 8 hours ago, perdu said: The mixtures of rubber and catalyst and two part resins means using a scales (even pink ones) is useful but I have even succeeded by estimating the amounts of each I keeps small quantities of parts A & B in eye dropper bottles and measure small quantities by equal numbers of drops. 15 drops of each seems about right for a 1/72 bang seat (Cedit (sic) to CT for that trick IIRC) 8 hours ago, giemme said: I'm definitely going to look for a suitable supplier of this moulding stuff when I get back from my hols You'll find it easy, fun and amazingly useful Giorgio. Lovely seats Bill. Don't throw away the moulds will you? I can see me looking to cadge a couple if I do a Bucc in the future Edited July 21, 2017 by Fritag 5 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now