We’ve had reasonably good quality from 2 part silicon molds before (see the chocolate marvin in this image https://3dhubs.s3-eu-west-1.amazonaws.com/s3fs-public/val.jpg 8) a 120mmx5mm mold should work, tho demolding such a thin cast might be tricky to avoid breakage.
I really it would be a mould with multiple cavities of the sewing needle so i could produce multiple at once ( example attached). What is the texture of the silicone when set?
How much would a mould like this cost to produce roughly?
The silicon sets smoothly so you get a smooth finish, and it’s moderately flexible which helps demolding. I take it it’s ok for the needles to be one sided (so would have a flat side as the mold shown would produce)?
Im not sure how many needles, the mould i have created has 25 cavities but it would all be dependent on price.
The flexibility isn’t an issue, if it is printed in a hard durable plastic the chocolate will still be able to de-mould as long as it is tempered correctly. The polycarbonate moulds i have already are completely rigid and produce an excellent finish so the flexibility is not necessary if its harder/more expensive to produce
Hi, yes our process creates food grade RTV silicon models, it’s not printed directly but cast from 3D printed templates. I’ve made a quick model with 5 cavities to do a price check (see image below), to print the below model with 5 cavities (120mm x 5mm) would be £60. Making single pieces larger is tricky so the same model with 10 cavities would be £90, however because I’m casting I can create additional copies of a smaller mold cheaper, so could do 5 copies of this model (total 25 needles) for £90 in total.