What would be the ratio? Thanks Catherine. David, It could be the same with epoxy resin .. but do a test .. let me know the result! That sort of solves the query, doesn’t it? No, actually this may not be a problem because in order to give the oxidised effect when used in sculpture the surface must be abraded to expose the metal particles. The polymer will also help it to stick to steel reinforcement structures. Well I take a bag of clear tinted plastic silverware, make sure they are styrene. I can’t even vouch that it can be used as a filler without affecting the proper curing of the resin itself. . I’m sure that adding a careful amount of pigment is a common solution .. but perhaps you should try a more translucent alternative to titanium white instead? If so what were your perceived results/findings? Portland stone. i am using Polyester resin to make cartoon characters. Fillers are also invaluable when slush casting with resin (building up a hollow shell) because the resin will automatically lay down a thicker coating. My question is what sort of texture and colour effect (when dyes area added) result when fillers are added. Sorry, no insight, I know nothing about this .. although a potentially interesting subject! my special product’ s CS (MPa) is 100 within an hour and setting time 30 sec to 300 seconds. Is it possible to thicken a clear resin? Finely powdered slate, gives a dark grey slate finish to castings and is also fairly cheap for general purpose filling. Please let me know as soon as possible. I have used it at 200g polyurethane to 100g fillite. Resin kits build differently than injection-molded kits and sometimes unexpected problems arise. Actually working with it in melted form is beyond my means. I am experimenting with hydraulic cement into the resin now. I have the idea of using collagen from fish scales / bones; is this possible? The sample has arrived .. thoroughly investigated by Home Office Border Force by the looks of it, but packaging just about holding together. It’s really good! so time factor is arises problem in casting time. Why not keep with the cement-based media, since these is designed for survival outdoors? I was wondering if you could give any insight as to how to go about making this material (i.e molds, components, etc.) Many thanks for this Ralph! Thanks, Yes James, considering the efforts you’ve gone to already I’m surprised you haven’t heard of this .. thixotropic additive! I am also wanting to increase the density. This is tougher than polyester, not as brittle .. and I don’t consider clear polyurethane an option for home use because of the health issues. A stronger bond would be If you are using an epoxy…simply rough the existing surface of fibreglass and then apply the epoxy. I’m not too bothered about discolouration caused by oxidisation of the copper or brass filler however the fact that it does oxidise when encased in polyester resin gives me some concern that the casting may not be impervious to air. Obtainable easycomposites.co.uk £29.94 per 10kg; tiranti.co.uk £2.77 per 500g, £10.33 per 2.5kg. If you know of any filler materials which you would recommend that would specifically fit these requirements, I would very much appreciate your input. Resin capsules/ cartridges are used in rock bolting during tunneling and mines. first color layer is polyurethane but upper white materials ……..??? Please help. i want it to be no colored clear , can it be done with epoxy ?. Any experience of this, and could it be a good substitute? It provides superior adhesion to most surfaces, including SMC, foam, wood, fiberglass, many metals, and even common construction materials. Hello David! Hi David, can be added to all resins to a 200% by weight maximum (according to easycomposites.co.uk) although at this ratio the resin will be harder to pour. polished with steel wool to expose the metal particles and achieve a metallic shine. Model Filler and Model Putty These can be used to fill in any small air bubbles or gaps between components. I have a question which I hope you can answer. I am working on Unsaturated polyester resin based capsules for under ground construction (Mines & Tunnels). FRIGATE UPSTREAM & ENERGY SERVICES LIMITED. .. i.e. For example I know that Fillite would be well worth experimenting with if you were using silicone because the silica in it seems to bond strongly with the rubber so that one can increase the hardness in increments without fear of the rubber fracturing. I hope you can clear some of my queries, Dr. Preeti Gupta. Filling a large cast completely with metal-filled resin would be very expensive! Obtainable tiranti.co.uk £5.26 per 2.5kg, £24.38 per 25kg. But you must have been in a hurry when reading the ‘lentils’ part because your contributor just uses them to estimate volumes, not actually as filler! It has a low viscosity making it extremely easy to mix. I want it hard and clear not brittle almost like a hard glass tile.. and I don’t know which one to use epoxy ,polyester , or polyurethane ? My problem here is that I don’t normally work with polyurethane rubber so I don’t know enough about how it behaves and what is normally combined with it. Suitable for adding to any resin to ‘improve mechanical properties’ which means making stronger, in some cases more weather-resistant and can also act as a thickener. I thought .. now that’s interesting, filling resin with lentils .. and not beyond comprehension, after all I’ve shown that used tea/coffee work very well! Tiranti markets it as ‘synthetic onyx’ saying that it gives ‘excellent translucent qualities similar to onyx and some marbles’ when used with polyester resin. .. no, not a good idea to add talc to cold-casting gelcoat layer because I’m pretty sure this would dull down the metal effect achievable? This allows Easy Flo 60 to accept a high percentage of filler with a low risk of breakage in the final part as well as minimal increase in poured viscosity.You can find Easy Flo 60 resin here: http://shop.brickintheyard.com/EasyFlo-Series_c23.htmGlass filler here: http://shop.brickintheyard.com/Glass-Filler-3lb-glassfillerU3.htmAnd PolyFil ND here: http://shop.brickintheyard.com/PolyFil-ND-Filler-1lb-PolyFilNDU1.htm I would be most interested in your test results with the black talc. effective when imitating stone. No. I don’t know whether you can use cement as a filler. Hello David We usually supply at 24 tonne lorry loads at £0.25/kg. I don’t think there is one! I have no problem coloring my easy cast clear epoxy resin with these methods. The mixture is sent to us after drilling and we process it by running it through a thermal desorber at approximately 650 deg F. The purpose of this is to extract all the liquids (oil and water) the residual ash is my reason for this mail. Neither copper nor brass powder will affect standard working time too much. So water-based acrylic is out .. unless you’re curious to see the resin foaming up and curing like Swiss cheese! My goodness what an excellent and informative discussion on the properties of fillers. I’ve been asked this before .. about using dry plaster as a filler for resin. For filler in resins we normally recommend, 1 to 50 micron our our 10 to 250 micron product. I want to create a bio plastic which is flexible. best, David. but of course the result is better than concrete casting. 1. becoz Polyurethane resin fast curing. Mixing plaster with this (if it’s advisable at all) would only diminish the metallic effect. These are produced using injection molding. The ‘bleeding’ has continued all this time. What do you mean by ‘multi-finish’? Fillite used to be very economical price-wise but this has rocketed in recent years (e.g. The hold will be cast using polyester resin and I would be hoping to obtain a fairly vibrant finish using suitable pigments. Whenever I want to thicken polyester without affecting the look I use a special thixotropic paste from Tiranti http://www.tiranti.co.uk/EdgeImpactShop/subcatdivision.php?Division=525&Content=Thixotropic+Paste+ which can be finely controlled to achieve any consistency of resin. Re: Fabulous David -Polyester Adhesives. Glass bubbles or ‘microspheres’ are suitable for all resin types and will thicken, reduce weight and make casts easier to sand. Another  of the main reasons for adding fillers is to make the cast material easier to machine or sand, in other words basically weakening it, and this is particularly true of polyurethane. A magnet is embedded into a resin model with glue and epoxy gap filler (Apoxie Sculpt). This is the case for example when using ordinary talc. You will need to use either dedicated polyester pigments, dry powder pigment or oil colours. It sounds like it’s out of my area. I think the writer has now learnt that you can’t mix anything water-based into PU resin .. and more so polyester resin! See my post on recycling or extending silicone. Thanks. I mean, in a positive way! I am using led lighting and wanting to spread the light into my castings?? I like to use a 61/2 This is real metal, but very finely ground into a powder. with the Polycraft one. Thank you! Informative site, thanks. The resulting castings would have to hold up outdoors/UV stable, and be very strong as they will be representing my craftsmanship as retail merchandise. Yes, I was busy with writing and just about to reply. The best way to do that is to eliminate gaps between the pieces. .. or is it a common by-product? Any suggestion on the type and percent of fill to resin when casting a product 3″ thick/12″ diameter? It is a two part epoxy that i have had many clients use for this specific process. But many fillers such as Fillite and the various ‘glass bubble’ types have been developed with smooth or spherical particles, which means that they affect the flow and viscosity of resin much less. I only have time for a very brief answer I’m afraid! However! I’d recommend you use clear epoxy. The larger-scale version of the above, as it were .. the individual strands of glass-fibre matting cut very short. easycomposites.co.uk sell their own ‘fumed silica’ and recommend adding just 0.7-1% by weight to make a non-slump liquid, 2-3% to make gel-like or slightly more than 3% to make a filler paste. I was wondering if you think it might be possible to use 100% of polyurethane up to 5mm in the mould and let that set and then file the rest with a polyurethane and fillite mix. or does this texture have to be incorporated in the mold already. You’re right .. the texture would have to be in the mould. I think generally if you want c. 15mins working time the usual option is polyester resin as opposed to polyurethane. Just a question, or two, first .. why are you considering faking ‘concrete’ or cement look for producing articles meant to survive outside? What is your recommendation? Is there a way to ad a textured feel to the cast resin ? Yes, I’m sure there are clear ones .. you’ll have to shop around. It’s not working. You may have answered this question already in a comment above, but I want to clarify because I was a little confused by the word choice of your reader’s inquiry. and the resin is reacting a bit, producing carbon dioxide. I can’t add anything to what I’ve already written in ‘Making a supported silicone mould for a life-size head ..’ under ‘Mouldmaking and casting’ in the ‘Methods’ section. Excerpt from product entry on EasyComposites website: “.. adding around 10% by weight milled carbon fibres to a traditional FastCast Polyurethane Casting Resin will transform an often too-brittle plastic into a far stronger material with increased tensile strength (snap/breaking strength) and durability. It could work though. However, when this mix is rotocasted, the results can be fragile and if accidentally dropped, it will shatter like glass. yr very helpfull! Amazon.co.uk: plastic filler Select Your Cookie Preferences We use cookies and similar tools to enhance your shopping experience, to provide our services, understand how customers use our services so we can make improvements, and display ads, including interest-based ads. Any updates after allowing it to dry further. Most of my experiences with commercially available Bioresin have been bad though .. i.e. +919917052888 I’ve included some of them at the end of the following list. All that I know for sure about epoxy is in my page on ‘Epoxy Resin’ in the Materials section. Can you please throw some light on…what would be the effect of specific gravity of filler on gel time of polyester resin with MEKP? When I cast it it’s very brittle. Iron powder may just serve to increase the weight of casts (rather than any look it imparts) and can also be added to plaster to give a special effect as it rusts. I am casting a small electricity generating turbine in polyester resin, which will be exposed to the elements. I was considering making an alternative to plastics that have similar properties but would possess the added advantage of biodegradability. But there’s no polyester resin giving an hour’s working time as far as I know .. do you know of one? Pingback: Top 5 Tips on How to Achieve Maximum Shelf Life and Bubble Free Casts with Urethane Casting Resin! By the way, you may achieve it with polyester resin, especially the clear-casting, but not the regular polyurethane since this is opaque .. and I’d be very cautious, for health reasons, about using transparent polyurethane! So some may impart more strength to a casting, some may sand to a smoother finish, some may even be lighter. a filler-mediated occlusion of the central retinal artery. failing to cure, remaining soft, ‘weeping’ in places, smelling more disagreeable than the less ‘friendly’ kind! I will have to modify my working method/plan to take into consideration the short pot life. I’m also wondering whether mica powder (or very small flakes) would be an idea, because this may thicken the resin and possibly enhance the metallic effect at the same time. I’ve tried adding all manner of things to resin (sand etc) but there’s too much frothing even when I’ve dried it for 24 hours in an oven! This makes sense but I haven’t noticed much difference myself because I most often work with quite small amounts. It greatly increases the strength and weather-resistance and, if mixed in a certain proportion with cement, results in a sculpting mass very like natural clay .. though one has to model comparatively quickly with it? The ash is in the form of a black talc to be disposed. thanx for ur reply….can u suggest me what type of polyurethane i will select for slow set curing? I am thinking of trying broken glass, but, i have seen broken glass caste in clear epoxy and it looks like broken glass. hi The goal is to have a bridge forms the two parts into a single surface. .. so if you’re happy to send me some (i.e a kilo or so) I can at least do some small tests with the resins I have? It will not increase the density though .. THIS product: Perfect Plastic Putty, is exceptionally good (when properly used) for resin miniatures from Reaper and other manufacturers, plastic model kits from Tamiya and Monogram, Gundam models and probably anything where small/short plastic seams need to be sealed for aesthetic purposes. Obtainable specialplasters.co.uk Trucal No.4 £6.96 per 25kg. No, I haven’t worked very much with epoxy resin. Hi David, Can you please send me your shipping address. Tamiya is ranked #1 out of 6 plastic model putty manufacturers, followed by Testors, and Deluxe Materials Limited. I have been using titanium dioxide powder (white pigment) to make it white again, but i feel it comes out less natural then if i was able to preserve the marble dust natural color. I’ve also seen bioplastics based on corn starch, glycerin, vinegar, and water. Is this the intention? I want to ask as I was still unclear – when would you recommend to use Fillite vs a hollow glass microspheres? This is particularly the case when adding a filler which has some absorbency such as sawdust. Yes, I would be very interested to try some .. I’ll email you. I have considerable experience with a product from the US called Kraft Kote. Putty/Filler. Some, such as Fillite and glass bubbles, will reduce the weight of castings considerably and also make the resin more carvable. .. and if the results are interesting please tell me about them! This is a weird result with the cement though .. it does sound as if the resin isn’t curing fully i.e. Hi David For example .. cement is very strong when mixed and cured as it’s supposed to but when added to resin it just becomes like any other powder. to add to cast silicon or urethene objects, I.e. | Raw Material Suppliers. From what you’ve listed, and if oil and water are eliminated, the ash shouldn’t inhibit the setting of either resin. What do you think? When added to resin fine talc will thicken it quickly, changing the viscosity noticeably even at just 10%. Milling produces very short glass filaments, rather like flock. Would you include fiber, and if so, which type? Obtainable tomps.com £5.39 per 1kg, £18.59 per 5kg; tiranti.co.uk £6.31 per 1kg, £66.77 per 20kg, Noblite has similar properties to Fillite, but minute bubbles of glass. I have seen in the US one company advertises a clear epoxy putty. I am writing from Brasil to kindly ask for help: I am trying to make a marble dust surface finishing to cover the surface of an open air art sculpture made of concrete plates. If you have questions about adding fillers to Polytek polyurethane casting resins, please get in touch with us: Call us at 800.858.5990. Even glass microspheres will change the appearance. I’m not familiar with the ‘Resin Capsules’ you speak of? Either this, or you have to abrade the cast surface afterwards to matte it. Overall light grey in colour but with a speckled appearance. Could you tell me exactly which resin you’re using, what you’re using for the mould, where the sand comes from etc? Yes, sounds like it. Also what about my question regarding adding plaster of paris powder to poly resin for weight, would that do the job? Your intentions re marble simulation sound right! Have a look at new info I’ve put in the article, particularly re ‘Milled carbon fibre’ at the end of the list. No there definitely won’t .. certainly shouldn’t! Mike. Obtainable tomps.com ‘marble flour’ £5.05 per 1kg (price decreasing by bulk); tiranti.co.uk ‘marble powder’ £4.69 per 2.5kg, £19.52 per 25kg; tiranti.co.uk ‘marble filler coarse’ £4.74 per 2.5kg, £20.30 per 25kg. If all that’s needed is a metal effect on the surface it’s common practice to fill a small amount of catalysed resin richly with the metal powder (Tiranti recommends the same volume plus a little more) and apply a thin coat to the mould surface first before filling the rest with unfilled or pigmented resin. an industrial ash by-product, more specifically ‘microspheres’ of alumino-silicate. I need to look into this though and deal with it a bit better in this article. We can make any particle size to suit an application as long as it is in sufficient quantity. I’ve found a fibreglass fibre filler supplier, does this sound like the stuff I need to fulfil my intended needs? As soon as the hardner touched the mixture, the resin got cured (and not at desired setting time). Thanks. Yes, I would use less silica powder and/or replace it with another product such as Cabosil, Cenospheres, Qcels, or Talc . The composite structure has to be of a certain hardness as to be hard enough so that it can withstand applied loads yet also exhibit significant flexural properties, not being too rigid and of a certain flexibility, so as to drill in curvilinear directions. Can you add cement as a filler? If you mean a type of polyfilla then, no this wouldn’t be suitable because it is water-based. Products of Plastic Model Putty. is ‘fumed silica’ and one of the more expensive fillers. But as far as I know a filler won’t make the resin surface matte .. the surface exposed to the air will still be shiny, at least I know it always is when using polyurethane resin. but I have been getting bubbles in the product. Hello Mike, Nor are alot of things you use in the kitchen. Thanks for your reply David. And, they will have to mimic the look and feel of concrete, although for the lighting I’m not opposed to a reduction in weight. But in terms of adding weight, it may be the cheapest but I would have thought there are heavier options, such as marble dust. I will may mix some broken glass in for an effect, but, i would like to make a clear epoxy paste or putty. I’m interested in producing the lighting, and perhaps other items, using the casting method rather than hand sculpting. Would you be interested to try some? Other Things You Need To Know. .. nothing which contains water! Tamiya is ranked #1 out of 7 hobby and craft putty / filler manufacturers, followed by Testors, and Deluxe Materials Limited. Many of the fillers in the following list are also suitable for mixing with plaster, provided they are non-absorbent and don’t interfere with the plaster’s water uptake. Obviously kits consist of individual parts. Doll & Model Making Candle Making Food & Fermenting ... 3D Fish, Transparent Film, Epoxy Resin Filler, UV Resin Filler, Koi Painting Art, Resin Inclusion, DIY Craft Supplies, Gold Fish, Blue Fish CreativeSideSupplies. I’ll test it soon! I would be grateful for your advise on this subject or maybe you have a better solution to my problem. Copper .. or brass .. powder I would think. I am also looking for some semi automatic machinery for production run. I rotocasted a few figures and the feel is like vinyl. …… can i get 10 to 15 mnts pot time? I would use marble dust but its impossible to find on this small island and no hobby store on mainland will ship it here. I’ve sent you an email (to the address you’ve included here) with my delivery address. Thanks a lot for all your suggestion and help. Also, can further increase in specific gravity of filler may result in settling of filler at the bottom….? For smaller areas, a file set is also useful. There’s something within the ‘black talc’ composition that is inhibiting the proper curing of the resin. | Raw Material Suppliers. I’m afraid I don’t have the specialist knowledge to help you with that. Also if I need to paint these objects, what is the best approach to doing so? Recently we faced a strange and regular problem. Kraft Kote is NOT food grade. Resin Modifiers and Fillers are used to change the properties of resins. The section is about 10mm all round apart from the horse. is not and will not become chemically active) can be used as a filler in both polyurethane and polyester resins. After all, fillers for resin really should be inert, and cement is definitely not! I haven’t used this myself. Can be used as a resin by itself if catalysed. An exception is Cabosil when this is allowed to soak in resin overnight before using. Many thanks Kent. We have a great online selection at the lowest prices with Fast & Free shipping on many items! You should try .. see what happens. Add To Cart I don’t think there’s anything that will while keeping it transparent! I shall be thankful if you can throw some light and guide me regarding the same, Once cured properly the surface of the casting needs to be cut back i.e. I would normally say that the only solution would be to use less silica powder, surely? Simulation 3D Mushroom Model-Mushroom Filler For Resin Epoxy Mold-DIY Jewelry Filling Material-Micro Landscape Decoration Accessories JOJODIYCRAFT. On the whole almost anything which is completely dry and inert (i.e. Sanding will take care of minor problems. No, I’m guessing this would not work .. that is, I know it wouldn’t work with polyester resin because the powdered Styrofoam would dissolve in it and no doubt affect the setting of the resin in the process. There are self-levelling crystal clear epoxy resins for this very purpose .. but at the moment I can’t remember where on the net I’ve seen them. 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