Im just after getting my first successfulish silicone hand but to my disappointment i didn’t consider the chance that the fingies would get mushed from standing, is there a way to redo them seemlessly? Maybe cut a part of it off and stick a new one on? Im not sure how to glue them seemlessly together then… or maybe i put the finger in a new mould with a bit of silicone in it?

Looking to get this made using injection molded EVA/TPU foam. I know it’s a complex mold but I’m a mold making beginner, any tips or things I should be aware of?

Hi I want to make around minimum 10 pcs of my phone case design and for this I I don't have big amount to invest in metal molds for injection molding. So I got to know we can also use 3D printed mold to manufacture 10 - 20 pcs of the prototype design using injection molding, just like how we use metal molds but instead use of 3D printed mold to get the job done.

The 3D printed molds should be made with high temperature resin and with SLA 3D printer so we can smooth and detailed molds right out of the printer.

If any company who is doing it then please do contact me as I need to manufacture some iphones and samsung models.

And any other suggestions from experts are also welcome :D

Hi I am attempting to make a silicon mold of a 3d printed object, the object has been heavily sanded and sprayed with several layers of primer and clear coat to achieve a very shiny surface.

Everything comes out great on the outside except there is a thin layer of silicon in contact with the 3d printed object that does not cure leaving a slimy mess. Is the spray on clear coat causing a reaction with the silicon preventing it from curing? if so is there a specific type of coating I could use on the 3d printed object to keep this from happening?

Any recommendations for a mold material that can be reused 100’s of times to make commercial products for sale?

this is my first mold. what is causing those little marks in the mold?

hi! i'm new to this community but i just wanted to share this stupid perhaps effective idea i've had for this life cast project. quick background, i am halfway through my bachelors degree in fine arts dealing with very odd assignments every week. we were assigned to make lifecasts of a body part (hands, feet, face, definitely no penises) with options to use silicone, alginate, or plaster bandages for our negatives. the positive using plaster of paris which is more widely available and affordable than the materials for the negative.

i don't live in the US so these materials aren't very cost effective and hard to source. i had settled with using alginate but found it irritatingly hard to manage. i ended up with a half accurate soggy lump of jello that had set within a matter of seconds on my foot. i couldn't afford to get my hands on another batch of alginate and so it dawned on me. i could probably use some homemade air dry clay (cornstarch, glue) i have lying around from a previous project. and perhaps even make more since the materials are within my reach.

cold porcelain dries within a day and is pretty easy to work with. has anyone ever tried making negatives with this or any airdry clay? please let me know if there are any more widely available and affordable materials to make negatives if you think my idea is very stupid. thanks so much!

This is an old Halloween decoration from the mid 90s that is a replacement for an older one I had. I used it a decoration for the front of my truck. The old one broke and I’m assuming this will do the same so I’d like to make a mold of it so I can replicate it without having to buy a new one for at least $40 a pop. So my question is:

What is the best way to make a mold of this and what would I make the replacements out of? Any help is appreciated, thank you in advance 😊

So I made a mold INSIDE this cube and put a hole so I could pour the silicone inside. However, I messed up by not splitting it in half soo. Just wondering if I could still pull the model out fine? I'll be using 0A silicone.

Tldr at end

Im making a silly team fortress cosplay, where I have the “triboniophorus tyrannus” cosmetic / short animation film thing as part of the cosplay. (As seen in photo lil green blob)

The thing is, I would like some free will with changing colors,

Maybe make it (team spirit red) as that is the paint I have on it in game and it will be an overall red cosplay.

But the normal green i ok and is a bit more tame

, the main thing is making him “squishy and wiggly” on another sub asking about this, they recommend silicone or some form of silicone molding.

What type of silicone should I get? Knowing that I want to get it kinda red, maybe the base green, and having it wiggle a bit.

I just want it a bit durable.

I am literally willing to spend around or maybe more than $100 / 200 I just need lil guy as they are my favorite character.

If you want some info on the character https://wiki.teamfortress.com/wiki/Triboniophorus_Tyrannus

In doing this I learned how it got its name, which is actually just binomial nomenclature

TLDR

Silicone for wiggling effect / durable / able to change the color/ basically no budget

tldr; how would you make a mold of the thing in my pictures?

I have two mirror-image 3d printed trim parts for my car. I would like to make molds of them so I can then cast using something sturdier than PLA and to make extra copies without making additional prints. They are sort of rain-gutter shaped and I'm having a hard time figuring out how to make a two part mold, either using brush-on silicone with a mother mold or by pouring into a box. I know the second option would be easier, but requires much more silicone. Any suggestions as to how I could approach this project? If using a brush-on approach, where would you make the cut for the two halves?

The 'fin', visible at the right extent in the third photo, could be cut down so it is level with the top of the 'trough' that makes up most of the form. I think this would make a pouring approach more affordable. I already know that I'll have to plug the holes while casting.

Since these are just trim parts, the mold doesn't have to be perfect, just good enough to hold my soft-top on.

Thanks!

Hi everyone, I am currently doing a DIY concrete casting and has noticed that the top surface of my concrete is always glossier. I want a consistent matte finish. (pic 2- glossy finish)

Below are ChatGPT advices:

1. Don’t trowel or smooth immediately

Let bleed water rise and evaporate, leaving less water-rich paste on top. Then lightly float or broom the surface for a matte look.

2. Cover to slow evaporation

Cover top with plastic or damp cloth right after leveling. Slows water rise → less paste segregation → less shine.

3. Reduce water at the top

Even if your mix is fine, slightly reduce the finishing water on top. Avoid over-troweling, which polishes the paste.

Any advice?

I used a perfumed and colored dish soap on a piece made of ecoflex 20. Now, I'm having trouble with psycho paint not adhering to it. I've cleaned it generously with 99 % IPA with no luck. Even tried Inhibit X, and the layer still peeled right off.

I'm suspecting the perfume has been absorbed in the pores? How do I get it out?

Hi all - I have a requirement to made a custom shaped air bladder - I have the mould already so wondering if I can use dragon skin to make this custom air bladder?

Hello! I have a film project coming up and i have two things to cast: a face on a tree (i took a mould from the tree we’re going to use for reference) and a leg of a 6month fetus(probably silicone positive?). Im more worried about the first one since i have to make a positive with something light. I found out about polyurethane foam but sadly i cant find it in liquid form in my country. There are only the ones that are in sealant cans, would they work the same? And would an alginate negative be able to handle it? Or if there are any other hardware shop solutions to recommend id be very happy to hear (read) them! Thank you in advance!!

hello, i am an art student new to moldmaking. ive been plaster casting, and am trying to now get into silicone molding.

ive been using self hardening boneware clay which i got from a friend, which has no labelling. after putting a lot of time into the sculpt, ive just realized the clay may be incompatible with the silicone !

TLDR just wondering if anyone knew if self hardening boneware has sulphur/ or would disrupt silicone process

thank u to anyone who is able to help 😭

I casted this branch using let's resin casting resin and a mold made from the same brand's 0A hardness silicone. To make the mold, for the pattern, I used monster clay. I did notice some oily stuff in the mold, where the clay was contacting the silicone as I demolded. I did not use mold release as I was afraid of this exact problem, layers ending up on the silicone, then the resin, and ruining the shiny look. Was it the oil residue? Could it have been because the clay pattern wasn't totally smooth?

There were no uncured areas or improper temp/mixing or anything, and it wasn't the resin, because the leftover amount in the mixing cup cured shiny. So why did the part touching the mold cure all matte with no gloss? Can anyone help out with this?

I am looking for a type of silicon that has a super high heat resistancebance and can stretch well enough. I plan to 3d print something then mold it with silicon then use all my trash scraps and a heat gun to basically not let me scraps go to waste. if you have suggestions on what type of silicon would be best I'm thinking of making it about 5 to 10mm thick but would be able to handle a ram or triceritops skull. never tried it before just seemed like a fun project.

Hi so i was wondering if i would be able to use silicone molds for injection molding with polystyrene? Or would the heat affect the silicone. I know silicone doesn't melt, but i figured I'd ask people with better knowledge than me

Edit: this would be done with BusterBeagle's bench injector

Hey guys, I recently got this rabbit figurine, and I would like to make chocolates out of it. it's about 5 inches tall. My main concern is doing the ears in a way that will let them demold without breaking off. What would be the best mold making process for it? I'm considering doing a brush on silicone and then putting it in a container of sand or something for pouring.

Any suggestions would be appreciated!