can i still use drcrashes plastic oven former vacuum on 3mm grp plastic?

Im moulding a model catermeran and im not sure if the vacuum will work or i can use such thick plastic many thanks barry

Asked by barrymasters 8 years ago


How can I make a hollow, see-through sphere? Answered

This is for an adaptation of a lamp. What I want is to cover the bulb with a large (little smaller than a basketball) sphere, so there will be a hole in one end. Light obviously needs to be able to shine through. My first thought was a resin of some sort, and a quick search led me to epoxy resin. Is this see-through? Can colour be added? Any other ideas? Some early thoughts: - In an inflated balloon, inject liquid. Rotate, thereby distributing fairly evenly, until liquid hardens. Cons: How long do I have to rotate this balloon? What if it pops!? (Could use a hard container...) - Double boiler: Use two similar bowls, small inside larger, fill in between. Cons: How to get it even? Smaller bowl would float (weigh it down...) Not even close to a sphere With your suggestions I'll do a few trials, possibly put out an instructable if something works. All suggestions are welcome (even if they deviate a little). Thanks!

Asked by funkrack 7 years ago


silver casting mould

Anyone help me here..I have a wax master of a signet ring. If i use lost wax casting i will lose my original....This i do not want. Is there a mould making stuff that i can press the ring into leaving a negative to fill with silver.....

Posted by maninamousesuit 10 years ago


How do I manufacture this paper/pulp detail?

I have a small detail (abt 50x35x20mm) that I want to take from 3D to reality. It would be easy to just send it to the local 3D print hub, but the issue is that I want it in some kind of paper pulp material, or some other material that can withstand heat and also be lightweight. I know that there exists 3D printers that can print in paper, but I haven't been able to locate a print shop with such a machine. For prototyping, I have cut kraft paper sections and glued together, but I'd like to find a faster way. There is also a production method for pulp moulding, but the shape of my detail is too complicated for this method. Any ideas of production methods or materials that I could use instead? The detail can be split in 2 if neccessary, but I'd prefer not. Thanks in advance!

Asked by karolina81 1 year ago


Aluminum casting on the cheap?

For my woodshop class I am making a cane/"pimpstick" and I am making a custom head for it. I want to cast it in aluminum using the lost wax technique. would normal plaster of paris be a good material to use for the mold? the peice is about 3 cubic inches. I was thinking about having two "fires" one to heat my aluminum and another to heat  the mold so it doesnt shatter. Is that workable? P.S. It would be a one use thing so no need for anything expensive. I have literally 10 dollars to spend on this. Thankyou,   bud

Asked by budhaztm 5 years ago


plastic moulding?

How do i go about moulding plastic, how to make a mould how to melt the plastic any ideas

Asked by johnnywgk 9 years ago


Mould? Answered

How can I stop mould and can I still finish my mache project

Asked by HazelT7 1 year ago


i've been playing with the idea of moulding my family's heads and affixing antlers, anyone got suggestion?

Instead of sending a family portrait to my nan, I've been thinking a trophy of my family's heads would be pretty sweet. I wanted to get a mould of our head and put giant antlers on top, you know like an elk or deer. Has anyone got suggestions as to the best way to go about this?

Asked by R1Ch0 7 years ago


Experience with the Flexil/Vinamold/Gelflex hot melt vinyl rubber?

Hey again,Does anyone have any experience with this Flexil hot melt rubber stuff I've seen about. It's a vinyl rubber that you melt in a pot around 170 degrees and then pour it over masters and formers to create moulds like you would with RTV silicone (except quite hot). The rubber can be remelted which is a benefit over silicone, but does anyone know of reasons why silicone is better for making moulds with (other than the master possibly melting).Link here: http://www.cfsnet.co.uk/acatalog/CFS_Catalogue__Flexil__554.htmlIncidentally, CFS is also a good place to buy pretty much all casting and moulding materials if you're in the UK at somewhat reasonable prices :-)

Posted by chiok 9 years ago


Is there any others cheap meterial to make mould??? ? Answered

Is there any others cheap meterial to make mould??? If the mould big the silicone mixture will be too expensive

Asked by recuat 1 year ago


Moulding a MUG? Answered

You mention a two part mould when moulding a mug -How does one do the inside of the mug to make the body and base with a thin wall.Regards.Stuart

Asked by Stuart Tobin 4 months ago


what's the best way to mould 2Ltr plastic milk bottles into any shape??

I'm trying to mould plastic milk bottles (pieces of) into a shape onto a mannequin..... for a comp...... i'm making an outfit.... and to mould to a body shape (curves)

Asked by antheajane 8 years ago


How do I Making a mould from a ironman helmet made from Polyurethane resin?

I have recently brought a hollow wearable ironman helmet cast from  Polyurethane resin. I was wondering if its possible to take a mould of this helmet to recast it make replicas? any help would be greatly appreciated..? I have uploaded a picture of the helmet so you can see it.. Thanks Chris

Asked by chris27989 8 years ago


Silicone thinners; what is a suitable compound to thin silicone caulk? Thank you. Answered

Preferably non-toxic and inert, to make the silicone caulk/gel more viscous, to allow it to flow into a mould more readily.

Asked by brendanmccloskey 5 years ago


im looking to make a kayak paddle out of fibreglass type materials but dont have a clue how id make the mould?

Im hoping to try and copy or even make a good designed double bladed kayak paddle out of fibreglass kevlar or some type of composite. id probhably make it in 3 parts being the two blades and the shaft. iv never used it before so any ideas will be great. thanks. pad.

Asked by padz 7 years ago


Is a hair-dryer hot enough to deform PVC? Answered

A future project requires the slight deformation of cut PVC waste-pipe. Not soft enough to melt, just enough to slightly open a cut half-pipe, then keep it there when it cools. Will a hair-dryer provide enough heat, or will I have to invest in a hot-air gun?

Asked by Kiteman 8 years ago


How should I make a right side wing using only the left side?

I have a little ceramic figurine. IT'S LEFT wing (opposite of one shown) is broken and has been lost. Now, I want to somehow use IT'S RIGHT wing (pictured) to make another left wing for it, through casting, molding, clay baking, using foam or whatever. I don't have access to anything high tech. Basically foam, clay, etc. but no molten metals or anything. Any ideas? I mean, it would seem simple enough to just make a mould with the existing wing and use it as a mold to make a new one, but the wings are obviously mirror images of each other, so not only are they on the opposite side, they're sort of reflected. Here is the wing I have, I need to create the other. Thanks,

Asked by macgyverunigrad 1 year ago


Moulding from an ice or snow original

I'd like to be able to make a mould from an original shape in snow or ice. Any ideas ?

Asked by and7barton 7 years ago


Mould size?

Hi mates, do any mof you knows how to make a mould bigger than the original model? In other words, anybody knows how to copy a small figure in a bigger size? thanks in advance for your answers from Spain.

Asked by pepenacho 8 years ago


figurine moulds in brass? Answered

I have beautiful brass ornaments I would like to replicate eg.monkey or cat

Asked by bernards33 1 year ago



How is this person moulding paper onto aluminium?

Hi Guys, Intrigued about this guys process... would it be heat gun? http://www.seventeengallery.com/artists/jon-rafman/new-age-demanded/

Posted by jarris 4 years ago



Casting resin or epoxy in a mould

Hi, I am looking to do an artwork where the final product is a clear plastic resin or epoxy sculpture with various items such as plastic forks and straws inside it. I got this idea from resin flooring which has crushed up beer bottles and screws in it, and now I need some advice. Currently I am thinking that I will make the sculpture from polystyrene and make a mould out of plaster of Paris by pouring the plaster over it in a tub of some sort. Is polystyrene a suitable material to base the mould off and can resin or epoxy be cast in plaster of Paris? Also, how might I go about making 2 parts to the mould which can join together and which I can pour resin in through a hole? Regards.

Asked by 8 years ago


How can I make a watertight two part box mold for ice?

I'm trying to make a mold for an ice project that is a box mold. I want the parting line to be in the middle of the model, and it needs to be watertight because I am using as an ice mold. Any suggestions? Thanks for looking.

Asked by bonnijean 8 years ago


Making moulds of something to make silicone products

Hi all. I have an item that I need to make silicone copies of. I don't want silicone moulds, but the actual end product to be silicone. What is the best way to do this? I have tried looking up but everything is "silicone moulds for xxx" and not what I want. Thanks!

Posted by JackOGara94 3 years ago


How do i make a rubber compound that could help me to make mouldings?

My actual need is to know some sort of moulding material that is flexible like rubber, from which i need to get a mould of some carving which have curves and groovs. This moulding material should be easy to find and readily available anywhere and cheap. What I have in mind is some material like fiberglass which is used for moulding but should be flexible like rubber. May be if there is some possibility to use some rubber compound that could harden once poured on to an object to obtain a mould of the object. ( Simple need is what material could be used for this purpous or How I could produce this myself )

Asked by Ifthikar Ahamed 8 years ago


can one cast aliminum into a silicone mould?

I am looking for a quicker & smother way of casting aluminum & have been advised to use silicone but according to what I have read --- the temperature of molten aliminum is to high for a silicone mould! True or false?

Asked by toshcama 8 years ago


Need help with mould

Hey everyone  i am looking for some assistance or advice i have created a sculpture for a project i am working on and would like to reproduce it what would be the best  mould to use to be able to reproduce this ,i have added 2 images of my sculpture if it helps at all  any and all help would be greatly appreciated

Posted by FrancesS3 2 years ago


Can anyone help me with metal casting?

I have been working with my friend, setting up a small IT business in our local area providing some software but mainly hardware. Now that I have a furnace and it can melt aluminium my friend has asked me to cast a case for his computers. He said that he will produce a wooden copy of what he would like it to look like, then give it to me to cast. I am wondering how I can convert the wooden copy into a wax copy so that I can continue from my own knowledge. Any help would be greatly appreciated. Thomas

Asked by thomas9666 6 years ago


Creating a cast from an antique mould?

I have a few antique tin moulds that make a variety of leaf shapes and wanted to frame them. I was thinking of making a cast from the mould to go along with the mould itself to demonstrate what the outcome would be from these molds. As the pieces are antiques (I inherited them from a Great Grandmother) I was not wanting to do any permanent damage to them such as having a resin stick to or dye the tin.  Does anyone have a favourite over-the-counter product or a homemade resin idea? I've thought of polymer clay, liquid resin, and plaster. Not sure what would be the best to use. Each have their pros and cons. I was thinking it would be neat to use a homemade recipe as it would have a neat DIY/handmade/antique feel. Any suggestions would be greatly appreciated :)

Asked by shoebox 6 years ago


In alluminium etching process what concentration is used , i want detail and is there any easy way in etching process ?

Our company is moulds making company we are trying to make chemical etching 

Asked by design-centre 2 years ago


hi, can anyone help with a laminating steel or brass with a thin film of silicon? Answered

Im buildng a mould for casing pcl (polymorf) there are issuse with using petroleum jelly as a release agent due to it clogging the pores, im building a highly porus biological scaffold for tissue engineering

Asked by randomhand 8 years ago


Carve and cast moulds

Hello I was wondering if anyone was interested in buying the molds I created to make the cast and carve chocolates in my instructable.  https://www.instructables.com/id/Carve-an-cast-chocolate-treets/ It means you don't have to go through the pesky business of carving or making our own molds to end up with some fun chocolates.. or you could use something like plaster and end up with some nice casts. 

Posted by world of woodcraft 2 years ago


Moulding plastic - for a knife handle or holster ??? Answered

Hi ... I would like to ask fro help to find the proper ENGLISH word/name for what I'm looking for. I would like to make a plastic handle (for a knife) and a holster. My grandpa had a stuff for this, where he moulded it, put the metal part of the knife handle inside and left it to become hard. I have found something like the POLYMORPH but I'm just a little bit concern - wouldn't it be to soft ??? Or the low melting point ??? The stuff that my grandpa used became hard as a rock. And when you wanted to remove it, you had to break it ... and it breaks exactly like rock, glass (it wasn't soft). Thank you in advance for any suggestions.

Asked by zholy 7 years ago


How would I make a mould for plaster of Paris to go into?

Hi, For the game.life contest I want to have a game controller mounted to wood like a trophy. How would I go about making a half-xbox-controller mould for plaster of Paris? If anyone steals the idea I can proudly say that I had the idea first. Thanks, NM P.S Notice how the analog sticks stick out? That could be a challenge :P

Asked by NatNoBrains 7 years ago


before finishing? Answered

Hi,I just used a wood mould and had a pretty good result regarding both the general shape of my piece and the surface.Before going to finishing, I would like to know if there is a kind of "first" step to do before even envisaging a finishing treatment, a kind of "state-of-the-art" after mould cleaning of the surface.ThxB

Asked by BaptisteL8 1 year ago


how to make motor vehicle indicator lenses, the orange bit,

Can i use my origenal to make a mould, any suggestions, then i'll be back to ask, what do you mean, how do i do that, where can i get one of those from etc. etc. hehe thanks johnny

Asked by johnnywgk 9 years ago


Casting pewter in RTV Silicone

I want to reproduce a bit of jewellery I have designed in pewter by using a 2-part RTV silicone mould. By all accounts it is possible but I've run into some problems when sourcing materials. Most high temperature silicones I have come across state a maximum temperature of 250°C, But pewter has a melting point of around 280°C. My feeling is that the mould itself will most likely never actually reach 280°C and will probably only be above 250°C for a short period of time. But I'm wondering if anyone has actually done this and could verify for me. Also as I'm new to the whole process, any other tips are welcomed. This is the high temp silicone I'm currently looking at. Thanks,                -Tom

Posted by madmanmoe64 6 years ago


mixture/% of ingredients? I have made my mould, latex/rubber, appro ?

I sand carve,diamond, blast ETC, glass, granite, marble, wood, rock ETC. For my 12x6 " mould...I wish to make it from Portland cement, sand some fibre glass mat.......and GRANITE DUST 2% or 30%..so I can legally and morally call it a GRANITE base. It is groved to hold either 1/2" plate glass or a tile of substrate, approx the same thickness. If substrate is heavy or thick I will probably use adhesive for safety., Possible illuminate..Will see as it goes.This is very non orthodox, all my items are...but If I am charging several hundred to several thousand $ IT MUST BE A WORTHY BASE...IN mind is $75.00 to $150 just for the base. GRANITE or MARBLE is perceived $$$$$$$I can take pic of mould for you, I can also fill mould with water to know volume. I have asked many people and received many answers/options....confusion!!!!???? So I am asking A pro. HELPWhat else do you need myself????? Harry Shaboogy whatablastt@gmail.com"perception is reality"

Asked by harry shaboogy 6 months ago


How to melt tires?

Hi! Could anyone tell me what do I need to do in order to melt old tires and pour the liquid in a mould?

Asked by 8 years ago


casting a section of a large sphere in polyester resin

Hello, all.  I bought a nice pendant lamp for my house several months back from one of the local big box stores on clearance.  I only got around to putting it up recently, and when I opened it (yes, I already feel stupid for not having opened it right away to check on it...), the main glass lamp shade was completely shattered! Sadly, the lamp was on clearance because it had been discontinued, and none of the stores in Canada have any of them in stock anywhere, so getting replacement is impossible. I really like the lamp, though, as it matches several of the other lights that my wife and I have purchased, so I figured that I would try my hand at making a replacement shade!  The shade is shaped as follows: it is a section of a sphere 19.5" across (the diameter of the section, not the of the entire sphere), and 5" deep.  A little math (x^2 + y^2 = 2yr) lets me know that the radius of the sphere that this shade is a section of is 12". Here is my plan, and I would like to know if I am crazy or if anyone has a better suggestion.  I am going to try to cast a replacement shade from polyester resin, 1/4" to 3/8" thick.  I was going to make a 2-piece mould from plaster, and use my wood router suspended from a gimbal (on a 12" radius arm) to cut the outer mould.  Similarly, I would suspend a plaster blank from the gimbal over my router (on a 11 5/8" radius arm) to cut the inner mould.  Then I would simply coat the two halves with mould release and pour/pump the resin into the gap between the halves.  I'll tint the resin with some dye to get it the amber colour that I want, then lightly sand to get a smoky translucent finish. My only questions are: 1)  will I be able to get this mould apart without destroying the resin casting, and 2) will polyester resin be strong enough for this kind of casting?  Another option would be to make a wooden mould, but I thought that I might be able to chip away a plaster mould, whereas a wooden mould would be a lot harder to get off of a stuck casting! Thanks!   PS, of course, if this works, I'll post an instructable of it!

Posted by roboguy 3 years ago


recycling plaster of paris used in glass casting

Actually it is a question again on same topic but the way the plaster has been used here may change the way it can be recycled. I use plaster of paris to make moulds for glass casting.I want to know if the plaster from these moulds can be recycled since they already have been heated for 24 hours in 800 degrees temperatures. Are the properties lost once heated that high?

Posted by patbagniewski 10 years ago



will plasicine stick to fibreglass resin?

Im having a hard time getting some normal grey clay to make rock climing hold moulds and was thinking if i could use plasticine instead?

Asked by padz 6 years ago


Lego wall? Answered

HiWould it be possible to make a lego wall in concrete? Instead of buying the lego base plates, I could make the plates with cement (I just need to find a mould for that) and then install the cast on a wall. Would it be ok cause it's heavy?...

Asked by FannyP3 1 year ago


how to build a vibrating platform?

I need to eliminate the air bubbles which form when pouring plaster of Paris into rubber moulds. so i thought i could eliminate this through low vibration as the plaster is being poured and eventually starts to harden.

Asked by 9 years ago


My candles are sinking? Answered

I made some candles earlier today, by melting existing candles and pouring them into a mould ( a pepsi can) 2 hours later this has happened (see below)! Why has this happened and how can I reverse/ stop it?

Asked by roblin90 8 years ago