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caterhamnut last won the day on September 19

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  1. Based on the glorious 1/12 Tamiya Caterham kit, the only part of the original kit is really just the chassis and body panels (yellow and blue) - just about everything else is scratch built, including 3D printing recently - commissioned by a very patient chap in 2002, lots learnt since! Totally finished now - so on to the pictures! The WIP build can be found here: Thanks for watching! I'll post some photos of the 'source' cars below....to compare!
  2. caterhamnut

    Lotus 49

  3. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Finished! I'll post a 'finished' thread in the correct place...
  4. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Cheers mate - yep, been a while - it was the 3D printer that made the end possible!! lol
  5. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    More exhaust details - added the rivets! I used some graphite from a pencil to add back some of the metallic look in certain areas... I glued the exhaust in at the front end (2-part epoxy this time) in the engine bay - rear exhaust mounts would come later... Of course the second, blue car had a different exhaust mount, with an extra strengthening hanger - it is common for the rear exhaust mount to snap as it hold such a long length of pipe and silencer... The white plate is for behind the drivers seat - brass pipe is exhaust support... Next big job which I had put off was the 4 clear race screens. These are quite scrappy in real life - bent ali strip along the bottom, cut perspex screens. The only way to make these was exactly like the 'real' ones - so cut some acetate sheet, cut some ali sheet and rivet them together (glued) then rivet them to the cars...great! At this point I was trying to be clever with the clear screens - there is a very small lip at the top on the real cars - I figured I could make this by using a section cut from a water bottle - I reckon you could find any canopy, headlight cover or curved window 'somewhere' on some of these curvy bottles...anyway, I found my section - but when I came to cleaning up the edges I discovered that these bottles and laminated - 2 layers! Same thickness (as opposed to the graphic sleeve some use) - and these were separating - so I dumped that idea and went back to flat - the compound curve would have made bending the corners round much more difficult, so all ok... More rivets! Scary bit - I painted these cars back in 2003 - no idea what auto paint colour I used, so no touch up later!! I glued them onto the car, but used rivets to provide a mechanical join as well... At this point with the seatbelts and screens done, I could finally glue the cages in place! Another part of the cage that I had almost forgotten about was the drivers side-impact protection... Getting close now - all these little tiny 'quick' details take waaaaay longer than you think they will take...starting with the 28 poppers to fit to the boot covers. I painted plastic rivets and then cut just the heads off to stick directly to the 'rubber' covers. Pins would have also worked, but more of a pain to cut and glue... Some poppers on the scuttles... Noticed a small bracket on the yellow roll cage - so that had to go on, complete with cable ties! Rear number plate and light on the blue car... And front plate on the yellow...I had also added tape to the front and rear lights, as race cars tend to do... And.....FINISHED!!!!!! omg - only taken 17 years!! I'll take some 'proper' finished pictures at the weekend - but well chuffed with the results.
  6. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    I am modelling these cars 'as-is' so the exhausts need to look like the 'used' ones on the real cars (see last post) - not all polished and shiny - although I would start at that point. I'm winging all this, but it has worked so far! As I was going to use Alclad Chrome, I applied gloss black 'undercoat' - used to make the chrome shine - as it was, I ended up going over most of this, but it gave a suitable shiny 'under' surface - most of the pipes are oxidised and dirty. The cans are aluminium or titanium, so a different colour. The I basically free-formed the build up of colour using Alclad Chrome, duraluminum, pale gold etc etc - I mixed a few together to try and get the correct tint, with the aim of using oils later... I then mixed up some tamiya acylics to airbrush, dry brush and stipple on, to represent the cruddy look of the real pipes... I still need to add some washes and highlights, and I want to try some of that graphite powder to get back some of the metallic look - but overall I am actually quite chuffed how these came out, considering I didn't 'practice' and made it up as I went along!! Not fixed in place (have to make the mounts!!).... Not finished yet - add rivets and wash, more painting - but not bad so far!
  7. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Exhausts: I drew up a selection of pipes for the exhaust system - printer had a fit in the first print so I ended up with a solid lump halfway up the pipes - be good for a space craft panel in the future! Re-setting the level of the printer plate solved the issue and I printed the pipes... Lots of trimming and sanding later, I had a 'kit' of parts. A slow process of offering the exhaust up to the car and cutting each pipe to size and length so it fitted through the skin - just as much of a pain as when you fit the 1:1 'real' pipes - believe me! But everything fitted together fairly well... Of course there are two of them. I added some details, such as exhaust clamps and tabs. I wanted to paint everything in one go, rather than add after - on the real exhaust everything is pretty much the same colour... Pretty chuffed how these came out - again the 3D printer saved a lot of work with trying to bend plastic tube - you still have to put the work in drawing the parts, and a lot of finishing... Primed and ready to paint... The holes on one can are for the rivets - fitted after painting.
  8. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Right - almost there with these..so some more details: Kit comes with a large steering wheel - JPE version comes with a MOMO but not the right one, and I need 2 anyway - so back to Solidworks and the 3D printer! ..end result: I also made some numberplate lights for the rear of both cars... One of the last big jobs - seat belts. The kit comes with a set of harnesses, with some sticky-backed, satin finish material, printed - but red. And not great detail - so I have to make my own. Standard practice is to use ribbon - I did play around with using 'lead' sheet - as found round the top of fancy fizzy wine bottles - used by the scale WWII plane makers - it is great because you can shape it really easily - but better on smaller scales I think - a bit thin for my purposes.... So I bought some black ribbon - 4, 5 and 6mm covered it. I needed lots of buckles and clips, so I redrew them in 3D and printed a variety - advantage of this printing is that if you fill the bed completely, it takes no longer to process - so may as well make some spairs/some to lose/some to try different finishes with... Testing... I wanted this 'crease' at the top buckle... I din't want them all the same in all 4 seats, so I varied which buckles were connected and which would be 'loose'. Fiddly little buggers to make though - folded the ribbon and glued with super-glue. Trying different glues for the paper printed 'Caterham' logos... ...and completed: Applied logo's to the seats - each car was different - particularly important for the customer! I think one of the cars was perhaps the first with a particular branding (Tillet or Caterham) Exhausts next - I have been playing with the best way to draw/print these - I had some sagging in some prints when done on their side: (Note, these black test pieces were printed at a lower resolution to speed up the printing time!) - I tried 2 halves, but just adding work to actually join and fill/smooth - so the vertically printed ones work best - print takes a LOT longer because of the much larger number of 0.01mm layers! - not figuring out the pipe run - again a bit of a bugger to do! Of course each car has a different can!! Making the exhaust system in separate parts lets me play with the angles more easily - so end pipe, can, long bent piece into collector, and then the 4 pipes that disappear into the side skin - engine-bay side pipes were done years ago as part of the engine. Once this is done, the last 'big' job is the clear 'windscreen' wind deflectors...
  9. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    These close up pictures show up all sorts of details/marks etc that you can't see with the naked eye!!
  10. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Wheels needed some more details before fitting, so I added some tyre valves and the wheel nuts, and then the 3D printer was used to make a mask for spraying the 'AVON' graphic on the tyres, which is a detail which will look great on the race car. Luckily it worked first time...:) I modeled the tyre profile on the mask, as the spray would need to go around the profile of the tyres... tiny bit of touching-up will be required on the wheel paint....
  11. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Hard not to go back to parts that I fitted/assembled 15 years ago and replace/improve! I changed these 'large' screws which held the pedal box cover on with 'rivets'... I need to be careful with this, otherwise I might never finish... 3D printer is getting more use - first with the shift-light module... And then making 2 dry sump pans - these can't be seen once fitted, as the car is so low - but they need to be there on the bottom of my custom 'K-series' engine...so not 'perfect' modeling, but good enough. Having made the '7' grill with the 3D printer, I now added the mesh 'panel' that sits behind the grill, in front of the radiator. This has worked out really nicely, imo! I sprayed a plastic mesh and glued in place, to be trimmed later... Of course it isn't all plain sailing. The paint finish on the rear wings had develped tiny cracks - it may have been the clear coat I used - but it meant I had to sand back and re-do. I masked the (home made) decal on the wings and sanded/resprayed. It only required a polish really. But the masking tape pulled the decal off...grrrr. I thought I had clear coated over the decal, but it didn't seem to hold it... So I had to remove, re-sand and re-spray without the decal - I did not have any more of these, which I had printed in NYC. No big deal, as only one time-period of the car had these particular race stickers on. Starting to assemble more sub-assemblies/parts now...
  12. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Game changer mate - now the resin ones are 'cheap'....
  13. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Back to the small details - central driving mirror bracket... ...and half doors!
  14. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Right - back on it after a trip to France and marshaling at the British F1 GP! I tried a bit of clear resin to make the rear fog and reverse lights - I'd made the casing already, so made the 'lens' to fit inside. I thought I'd try a few details inside in the lens to see if it showed when painted (with clear red) - it actually worked quite well! I used a bit of silver paint inside the lens to help, especially with the reverse light. I'll add some screw details later... I had a back-up plan using some clear red reflectors cut up, but the printed clear worked well... ...although I did have some weird artifacting with some of the prints - I think what happened was that the first few layers stuck to the FEP film, not the plate - then it stuck, and then i was getting some refraction of the UVA light through the clear resin - no idea, but I managed to get a few pieces that worked for what I needed. I needed to find a way to fit my wheels - the bolt holes did not quite line up - I think the file was scaled slightly over the years, but I wanted something stronger anyway... Incidentally, the Tamiya kit is so well made that it even has the alternative suspension mounts that the 'real' car has - in this model the trailing arm (link arm?) is fitted in 'comfort' mode - the lower boss is for better handling. It is all to do with 'rear steer' on the de-dion tube, and this kit actually can be used to demonstrate the difference and why the 2 positions work - I'll make a video next time I make one... So I drew up some 'spacers' (I wanted a slightly wider track) which included the rear bub bolt and the front bearing grease cap. These would mount on the existing wheel bolts, and fit snuggly into my new alloys. I used my trusty metallic pens to colour these - quick and effective! Needed to finish one of the cages... ...and some more decals.
  15. caterhamnut

    Caterham R500 Race car - Custom Build - 1/12

    Finished the wheels (or at least the main parts - need to add the air valves etc!) Printing the tyres was a pain - teied different angles etc, sometimes they would 'sag' as they printed due to the number of supports - still learning all that! Had a few flats! But once done, and cleaned off - I primed and sprayed with Tamiya Rubber Black (or tyre black - can't remember) - I am going to print a mask to spray 'AVON' on the tyres. I ended up using Alclad Chrome on the rims - but not to full 'shine' effect - just enough to glint a little bit. I did try the Spaz chrome you can see, but wasn't impressed - far more to do with prep. and not fiddling with the airbrush - alclad gave me a 'hint' of chrome over the top of the other.. . Nothing fixed or attached yet... Lots of small bits next - mirrors, fog/reverse lights mainly... Getting pretty close to assembling these parts to the cars and....finishing!!