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4x multipack of 3mm rescaled model of BR rivetted 16t steel mineral wagon to diagram 1/103. Note the price is about 4x the single 1/105 (and neither has any markup) so there is no saving on a multipack, in fine or finest detail plastic. This product is under development and is not for sale until I have practical experience to draw on from the 1/105 in 3mm scale in order to improve both models and upload new versions.
OK I have some feedback indicating that these will be fine as they are. Let me know if you want a one ir two pack (and which door combinations you want: these four are all different if you look closely) rather than buying all of them.
UPDATE 20200321 Feedback from the 'first to try' was that on two of the wagons, the sides were noticeably bowed. I think this is a consequence of the thin sides and the temperature during post-processing to remove wax and oil. This is usually retrievable after delivery by warming in hot water and gentle bending, but it's not ideal. I decided it was better to added internal bracing to the model keep things straight during production and preserve the correct shape. The downside is it made it 50p more expensive for 4 wagons (mkay) and if you aren't going to hide the braces with a load you have to remove them all by carefully scratching the corners where they join the sides with a scalpel, until gentle flexing makes them break out. For fun, see how many of them you can get out in one piece. Clean up any bits that get left behind, which are centered along the stanchion lines so it doesn't matter if it's not perfect, and the job's done.