Popular Post Tractorman810 Posted March 28, 2020 Popular Post Share Posted March 28, 2020 bit more on the 2 kidds mostly body work ,while i wait for other stuff to arrive, but if all else fails i have a few bits to finish or restart i guess 14 Quote Link to comment Share on other sites More sharing options...
Kirely Posted March 28, 2020 Share Posted March 28, 2020 Nice result on the Kidds Quote Link to comment Share on other sites More sharing options...
Tractorman810 Posted March 28, 2020 Share Posted March 28, 2020 Just now, Kirely said: Nice result on the Kidds cheers, a few bits to change, as i want them to be contractors versions, not farm, only small bits, some parts are only for temp widt anyway, like the bars across the top just to space and give me an measuring point . 1 Quote Link to comment Share on other sites More sharing options...
alf aphid Posted March 28, 2020 Share Posted March 28, 2020 Kidds looking great Sean Quote Link to comment Share on other sites More sharing options...
Janval Posted March 28, 2020 Share Posted March 28, 2020 3 hours ago, Tractorman810 said: bit more on the 2 kidds mostly body work ,while i wait for other stuff to arrive, but if all else fails i have a few bits to finish or restart i guess Now that's a shelf filled with good stuff! Also, good work on the kidds! 1 Quote Link to comment Share on other sites More sharing options...
Popular Post Tractorman810 Posted March 29, 2020 Popular Post Share Posted March 29, 2020 Little bit more done , dropped down to one now , as i want to alter the other , lots of fiddley bits which seem to take an age to glue and set 11 Quote Link to comment Share on other sites More sharing options...
alf aphid Posted March 29, 2020 Share Posted March 29, 2020 Well I’ve done my first castings at last !!! Few issues but fairly pleased for first attempt ..... 9 Quote Link to comment Share on other sites More sharing options...
Ferret90 Posted March 29, 2020 Share Posted March 29, 2020 Very nice job indeed 1 Quote Link to comment Share on other sites More sharing options...
Kirely Posted March 30, 2020 Share Posted March 30, 2020 Excellent result. 1 Quote Link to comment Share on other sites More sharing options...
GPS Posted March 30, 2020 Share Posted March 30, 2020 Wow, those look good! 1 Quote Link to comment Share on other sites More sharing options...
Stabliofarmer Posted March 30, 2020 Share Posted March 30, 2020 Great work Alf, a useful tool to have under your belt! 1 Quote Link to comment Share on other sites More sharing options...
alf aphid Posted March 30, 2020 Share Posted March 30, 2020 Thanks all, make no mistake, there are some improvements to be made but a start at least. Just awaiting some syringes turning up before we go again. I need to be a bit quicker next time! 1 Quote Link to comment Share on other sites More sharing options...
Cheshire Farm Models Posted March 30, 2020 Share Posted March 30, 2020 7 minutes ago, alf aphid said: Thanks all, make no mistake, there are some improvements to be made but a start at least. Just awaiting some syringes turning up before we go again. I need to be a bit quicker next time! How did you find it mate? Cracking first attempt. I'm finding it cheap enough to get it done off Dave towse who has become a good freind over the years and done all my stuff and quickly and the quality just gets better with him too but I always worry he will stop and I wont have a clue how to do it. I should invest some time into it whilst we are all on lockdown. Hope your safe mate 1 Quote Link to comment Share on other sites More sharing options...
Stabliofarmer Posted March 30, 2020 Share Posted March 30, 2020 1 hour ago, alf aphid said: Just awaiting some syringes turning up before we go again. Interesting, so are you injecting the resin into the moulds? Would be interested to see how you've laid out the moulds to allow for it? Quote Link to comment Share on other sites More sharing options...
alf aphid Posted March 31, 2020 Share Posted March 31, 2020 15 hours ago, Cheshire Farm Models said: How did you find it mate? Cracking first attempt. I'm finding it cheap enough to get it done off Dave towse who has become a good freind over the years and done all my stuff and quickly and the quality just gets better with him too but I always worry he will stop and I wont have a clue how to do it. I should invest some time into it whilst we are all on lockdown. Hope your safe mate Hi Sam, thank you, it’s ok but a lot of trial and error I will say. Worst thing it the speed at which it sets! When you are learning you like to take things steady, but you can’t !! 1 Quote Link to comment Share on other sites More sharing options...
alf aphid Posted March 31, 2020 Share Posted March 31, 2020 14 hours ago, Stabliofarmer said: Interesting, so are you injecting the resin into the moulds? Would be interested to see how you've laid out the moulds to allow for it? Yes I assumed that was the only real way ! How do you get the resin in the moulds ?? Quote Link to comment Share on other sites More sharing options...
Stabliofarmer Posted March 31, 2020 Share Posted March 31, 2020 I just pour it in. Mould design is key, inparticularly how you gate/vent the mould and how you can remove the mould. Most guides for a two part mould use, as it says on the tin, two parts. I try as often as possible to make them one part, and cut the mould to remove the part. For example the below mould is for a wheel rim. It is vented by the one opening, which is on the edge of the rim. This opening isn't large enough to extract the part from like it would be for a two part mould. I have therefore cut a split in the mould to widen the opening, but without loosing detail on the part, you just get a very faint line of flash (excess material). To fill the mould I apply pressure with my fingers to either end of the slit and it opens up. I simply pour the resin in and gentely release my grip so the mould closes again. Same theory on a more complex shape, this time a sheep. The four legs are used as vents, and one extra vent is added under the chin to remove air from the head. The cuts link all these up so that the sheep can be removed and the resin quickly poured from the same hole. Obviously its not always possible and a two part mould is needed, usually I find a slush mould most appropriate. Pour the resin into the female half of the mould, and push the male half in, displaising the resin. Venting is critical here as it is much more likely to introduce air bubbles that need to be able to flow out of the mould. 3 Quote Link to comment Share on other sites More sharing options...
Tractorman810 Posted March 31, 2020 Share Posted March 31, 2020 Thats interesting james , i have always gone two part moulds, i guess for tyres you would need to go through the centre mould block as well? I tried mine as a two part and just kept getting bubbles no matter how many gates i put in, so i recon this one could work better Quote Link to comment Share on other sites More sharing options...
Stabliofarmer Posted March 31, 2020 Share Posted March 31, 2020 Tyres are different again as I inject the rubber because its more viscus. 2 Quote Link to comment Share on other sites More sharing options...
Kirely Posted March 31, 2020 Share Posted March 31, 2020 Very informative, thanks for sharing. 1 Quote Link to comment Share on other sites More sharing options...
Tractorman810 Posted March 31, 2020 Share Posted March 31, 2020 4 hours ago, Stabliofarmer said: Tyres are different again as I inject the rubber because its more viscus. but your still using a one piece mould, with a cut in it ? get the injection part as the rubber one is a lot runnier to use 1 Quote Link to comment Share on other sites More sharing options...
Stabliofarmer Posted March 31, 2020 Share Posted March 31, 2020 Yes still one piece, the faint circle you can see around the hole in the middle is cut out after the mould has been made. This allows the part to be removed from the mould, but holds itself shut when empty. Quote Link to comment Share on other sites More sharing options...
Tractorman810 Posted March 31, 2020 Share Posted March 31, 2020 would i be right in saying that you dont make the tyres hollow,like a uh rear one of the rim as well? its a solid block with smooth inner rim? like a scaledown wheel set tyre just slips on . if so that makes way more sence to the method i found online. Quote Link to comment Share on other sites More sharing options...
Stabliofarmer Posted March 31, 2020 Share Posted March 31, 2020 No, they're hollow like most tractor ones so they sit over the rim. Hopefully photos explain it better. (Embarissingley only have scrap castings about so ignore the air bubble). 2 Quote Link to comment Share on other sites More sharing options...
Tractorman810 Posted March 31, 2020 Share Posted March 31, 2020 ah i see now, that big bulb looking bit made me think they were solid so to speak, will have to try that method i think . Quote Link to comment Share on other sites More sharing options...
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