Stator casting and best casting resins ?

I am curious which would be best for casting my 9 coil 3 phase stator ,Cyanate ester resin ,or Polyester resin?I also curious if it would be best to cast all coils together as a whole or would individual castings work better for heat dissipation? The individual picture just for example. Thanks for taking time to help :)

Question by 1RaceFTW   |  last reply


Casting Resin issue?

I'm trying to cast some resin claws for a halloween/convention costume I'm trying to make ( it isn't a Wolverine one .. more a VERY twisted, evil, and blood thirsty Mad Hatter character ) and running into a bit of trouble. I'm following the 5 drops of hardener per 1 oz of resin that is stated on the resin can's instructions. It also says it's supposed to set hard enough to support objects at 40 minutes. I mixed a 2oz batch of resin ( 10 drops of hardener ) and poured it into a rubber latex lined plaster mold that I had sprayed with mold release. I put a bolt down partly into the resin so I can later attach a wire to it and left it alone for about an hour to an hour and a half. I came back to check on it and the bolt was still able to be moved/removed with NO resistance. I figured the mix was bad and threw it out, but noticed it was the consistancy of slime. Did I mess it up and not wait long enough, or did I not add enough hardener or what ? Any suggestions would be great!

Question by Myrr   |  last reply


welding cast iron to mild steel

Welding cast iron to mild steel is for the most part done with ornamental iron such as gates and fences. the ornaments are typicaly cast iron such as spearpoints and fit over the top of what ever square tubing size ect you are working with. If you weld say with a mig welder in the normal mannor you rweld will cold roll and ball on you leaving a poor appearance that you will have to spend time grinding to make look good. Fortunatly it is not a matter of strenght or how much penetration ect. It is just ornamentation but must look good. Now take your mig welder with say 035 wire and use pure argon..(less spatter). Turn your welders heat up somewhat past what your normanl setting would be for what ever thickness you are using. Use breif spot welding like techniques overlapping as needed. You will find that this makes a good wash bead with no undercut or cold roll. The argon gas helps to keep down all the extra spatter welding cast iron to mild steel seems to cause. Larger peices such as caps for say 4by4 gate posts or fence posts, i preheat as uniformely as possibly to just under cherry red then weld as described. It welds badly because cast iron is actualy dirty, literaly with particles of dirt in the cheap castings, wich the ornaments are. Not haviong the need to be anealed or nodular for instance. If the welds are not going to show then you dont have to do this. It will still weld, just do not expect the clean perfect welds you are used to.  And NO I do not have PICS AND I dont own a digital camera nor do i know how to use one let alone put them on a computer.

Topic by beserker   |  last reply


bare bronze welding cast iron

If you happen to have a some what rare car, or one that is simply thirty or more years old, you may find that if you ever crack your manifold exauhst that you can not get another by simply going to a (pick and pull) So, the first thought is..most of the time, "I will simply zap it with NIRod". WRONG! an old manifold that has repeatedly heated and cooled is very brittle and the sudden change in temp and too rapid cooling may crack it even more. Now what i do is use bare bronze rod and braze the crack. Here is how i do it. First I find the ends of the cracks and drill a 1/4 hole half way through the material at each end of the cracks. Next I use a rose bud torch and heat up the cast iron as evenly as possible peening with a hammer lightly to releive stress in the casting. After about five minutes of this I quickly switch to a oxy-actl. brazing tip and start my pass. The first thing i do is heat up as much of the crack as i can to cherry red and sear one coat of bronze using plenty of flux. Then I start at one end of the crack and fill in the crack that i had previously veed out with a grinder to half way of the depth of the material and no more than 1/4 inch wide. I use an overlapping spot weld like technique. i lay a small amount of bronze, remove heat for a second and overlapp where i left out. When done I have a bronze brazing weld with no undercut or cold roll. Then i use the rose bud again for some post heating gradulay reducing the heat and peening with hammer again. Then I quickly take the whole peice and cover it in powdered lime so that it cools very slowly. This will stop it from cracking due to rapid cooling. Also it may put some ductility in the cast iron. It takes about four hours to be cool enough to touch with the bare hand. Then I grind the bronze weld flush and inspect the weld to see if i got proper bonding, all you should see is a ribbon of nbronze that has no porosity or cavities. I have also done rare boat manifolds like this when repeative NIRod was used at other shops and they broke every time. Still no 100 percent with cast iron like this. Sometimes it just cracks more, after all it is a dirty porous metal that is very brittel. Anyway, i have had very good luck doing it this way

Topic by beserker   |  last reply



My kid broke his arm, is getting a cast tomorrow, should I try to add some LED's?

My 6 year old broke his arm on friday night, they can't do a fiberglass cast until tomorrow. I was thinking what if I prewired an ultra bright LED and ask them to wrap it into the cast with just the led poking out. I was thinking I could decorate his cast to look like Buzz Lightyear's arm with a "laser". The wire could come out the top that I could connect a battery pack to so he can turn it on and off. Is this a good idea or not too smart? I'm trying to think of ways to make my son feel a little better about having a cast for 8 weeks.

Topic by tonythemediaguy   |  last reply


SELL

How can i sell in your site an aluminium cast foundry?

Topic by anastasiakariotou   |  last reply


I am looking for a way to "cast" wood.

Possibly mixing sawdust with a resin or something like that. There is a product that is called Arbowood that is like this but all natural. I want to be able to pour a "liquid wood" material into a mold. Any Ideas?

Question by ndelta   |  last reply


How do I make a hollow resin casting?

I have no access to rotational casting machines nor do I have the ability to build one. Is there a way to create a hollow resin casting at home with basic casting materials?

Question by puregoldner 



How strong is bondo body filler? Answered

How strong is the bondo body filler? Im looking into making custom molded handles with a castable plastic or rubber and was looking at bondo. Would it suffice for making a light handle? Whats it like when its dry in terms of wear and tear,texture.care,and strenght?

Question by trf   |  last reply



Floor Filler used for doming casting resin? Answered

I met someone from Germany who had a clear, 2 part floor filling compound, that after mixing, she could pour into a mold and have it turn out like casting resin, Does any body know of the stuff she is talking about?

Question by KyleofAsgard   |  last reply



Which casting material should I use?

I have been sculpting in wax and then making plaster or silicone molds to make multiples of some fairly detailed model toys. I intended to then pour in liquid latex and create wiggly bendy toys, but unfortunately latex doesn't dry inside the molds. It doesn't seem to matter how long I leave them when I open them lost of the latex is still liquid. I am looking for a replacement. Something durably bendy and low cost that will dry in a mostly enclosed mold.  Any Ideas? Please bare in mind I am in the UK. 

Question by moogle123   |  last reply


How can you make Gopro mounts with resin?

I have an HD Hero 2 and I would like to know how to make mounts with resin and harder.

Question by alspad   |  last reply


Does anyone know a way to make sulfur castings more flexible and not as brittle?

Hi, I just posted an instructable on how to make super cheap strong sulpho plastic here>> https://www.instructables.com/id/Super-cheap-strong-castable-SULPHO-PLASTIC/ and I want to know if anyone has heard of a plasticizer for sufur castings. The plastic is already very strong, but I would like it to be more impact resistant so that it doesn't chip.

Question by galaxyman7   |  last reply


I am looking for a casting material for a mold made from a textured sheet Answered

I made a latex mold off a piece of textured sheet.  The mold is 24x24x1/8 inch.  I want to make castings that are flexible and paintable, so I can make "sheets" I can shape into roads for miniature terrain. I have heard there are paints or surface finishes that will work for this, and if this is true, I'd like brand names from US sources.

Question by hardlec   |  last reply


How would I make a mold for Casting Plastic parts?

I want to make a scratch built custom transformer but I want to make a mold of some existing parts to make it so how would I go about doing that?

Question by xgestaltx   |  last reply



how would I create styrofoam? Answered

I am investigating th' lost foam casting technique and one of th' problems is th' surface texture of carved foam ! I know that large scale mfg's of cast alloy parts make foam patterns by injecting foam into a permanant (female) mold and then use th' foam pattern to cast th' part !  This gives th' cast part a very fine finished surface with no need of  machineing (except for fitting to another component ) I'd like to know how they create and manage th' foam !

Question by gearhead1951   |  last reply


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

Question by randomhand   |  last reply


is there any way to make a 3D mold for aluminum casting? Answered

In some of the aluminum foundry instructables I've read, the molds only have 1 side. I was wondering if anyone knows how to make a 3D mold?

Question by Redfox888888   |  last reply


can't get in warm glass forum or hobby metal casters forum,help?

Have joined both groups but havn't used either site for a while and now can't seem to get in.

Question by blindpig   |  last reply


Has anyone made there own smelting furnace and how did you do it?

I just need one to start my own mini casting house (my garage to be exact). I want to run it on gas and be hot enought to melt copper, brass , and aluminium. but only on a small scale to make castings for projects i have in mind. I know how the concept works but does anyone know any good tips eg what materials, how hot do it need to go, safety, and anyone how has expience in castings, making them or both.

Question by jonjon1978   |  last reply


How can I make a USB to 56k Modem or Ethernet to 56k/fax Modem?

I'm trying to reconnect my Sega Dreamcast to the internet, the trouble is that it only has a 56k phone-line modem. How can I "slow down" my internet for it, without spending $30 on a store-bought (http://www.usr.com/products/modem/modem-product.asp?sku=USR5637) or editing my computer's registry and using its internal pci modem. (http://dreamcast-talk.com/forum/viewtopic.php?f=3&t;=1956).  What would you guys recommend? Thanks in advance. :) Edit: As far as I know, Dreamcast communicates like a PC does on dial up - though sometimes there's not enough voltage through the line. Could a spare dsl modem be reversed, providing a dail tone and 56k? This is a better option for me than all the other methods mentioned because its automated and more like using actual dial-up. (No registry edit, no manual line swap, no voltage line regulator

Question by dairyfarmer777   |  last reply


How do you add a video/pod cast to a Forum? Answered

I have a forum and want to know how can I add a podcast or videocast to it. To see the froum go to www.vinalopotrader.freeforums.org I now want to interact with my forum members, is this possible? Thank you in advance. David.

Question by    |  last reply


Casting Call: Everyday Edisons in San Jose, Dallas, Chicago

The PBS show Everyday Edisons is holding casting calls for Season 3!Bring your idea or product and the paperwork, and present it to the judges in two minutes. Here's a useful FAQ.From their website:We consider concepts of all levels, whether it's just an idea, a prototype, a finished product, a patented idea, etc. -- all are welcome. There is no age requirement, but children under the age of 18 must be accompanied by a legal guardian. DatesSan Jose, CA - This Saturday, Feb 16 2008. Doors open at 7am at the McEnery Convention Center. Dallas - Saturday, March 15, 2008.Chicago - Saturday, April 9, 2008.Northeast, location TBD - Saturday, May 17, 2008

Topic by canida   |  last reply


How can I make a cast of my entire body? Answered

 I have been searching Jello molds, and I have seen hands, faces, breast, "chocolate breast", how ever I want to do my entire body. how could I do this and if so, how much would it cost ? ( not in chocolate )

Question by knuckel   |  last reply


Acrylic Resin / Polycarbonate Resin: Where can i buy?

I'm trying to find a place where i can buy Acrylic or Polycarbonate Resin to Cast. I'm trying to desgin and build ny own tables, desk, shelfs, and other small projects. 1) Where can i buy the Resin note: i did my research, Tap Plastics and other companys only ofer epoxy or polyester resins for casting 2) i decided acrylic and polycarbonate over other plastics. i would like your opinons 3) What are different types of acrylic and what do i need to watch out for, Im taking a Materials Manufacturing and Processes Class ant my college. Im learning about the chemistry of plastics and find it interesting Im trying to cast on a home level but trying to expand into a small business so comerical and home production tips would be nice But first thing first. I need "Real" Acrylic or Polycarbonate Resin.  Great Quality, it needs to be strong Casting Acrylic/Polyester Resin

Question by jschirm24   |  last reply


Aluminum Slugs for coilguns?

Throwing around the Idea of a Coilgun , can I cast some aluminum slugs to use with it ?

Question by tom10122   |  last reply


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 ?

Question by and7barton   |  last reply


Using an inkjet to print water based glue?

I am thinking about playing with an inkjet printer to print 3d sand casting molds. To save time, I won't be too specific in my design, but I basically want to modify an inkjet to print a water based glue onto layers of sand to create sand casting molds like the 3d printer in this video: http://www.youtube.com/watch?v=Z8MaVaqNr3U Someone also made a crude version of what I want in this video: http://www.youtube.com/watch?v=2nbtZOolSIY&feature;=player_embedded My theory is that if an inkjet printer heats up the water in the ink creating a bubble of steam to push the rest of the ink out, wouldn't the same concept apply to a water based glue if you put that in the inkjet? So here are my questions: 1) Would it be possible to put water based glue in an inkjet and have it print it? 2) Are water based glues are ok to use in sand casting molds? Tell me what you think and thanks for your input. 

Topic by sourcesmith   |  last reply


Bearings?

I'm looking at the VXB.com web site and can anyone tell me if the bearings are a fiber casting outside or a full metal bearing. Better yet does anyone have the part or kit number. I spoke with a sales rep and she asked if I needed a fiber outside or full metal bearing.

Question by captain727   |  last reply


Pepsi Refresh Submission

Please cast your vote for the CIR's Pepsi Refresh submission to Provide Cost-Effective Prosthetic Care in Underserved Midwestern Areas - http://pep.si/eo57my Video for the submission is available at: http://www.youtube.com/watch?v=x7gVKMypR7E

Topic by CIRnetwork   |  last reply


Looking for the proper different colored translucent plastic material to pour into molds? Answered

So I have a mold. I'm looking to make about 7 different colored casts and they have to be somewhat translucent. Is there a kind of plastic material that will melt at a low heat and cool translucent?

Question by Ryutso   |  last reply


Looking for programming/scripting options for iPod Touch that don't involve Apple Dev solutions.

I've been casting around for ways to program my iPod Touch 2G, such as by using Python or Processing. Not enthusiastic about jailbraking it at present. Wanting to interface an Arduino to it to do data logging, time-series analysis, graphing.

Question by Chris Kinata   |  last reply


DIY 5 Ton Hydraulic Press

How to make a homemade hydraulic press with a car jack,  u channel steel (u beam) and threaded bar.  https://www.instructables.com/id/DIY-5-Ton-Hydraulic-Press/

Topic by bubal   |  last reply


Trying to get help with arduino photocell sketch... Answered

Not too familiarl with writing arduino sketches but I'd like to connect a photocell to arduino so that when  a shadow is casted upon a photocell nothing happens but when exposed to light again it triggers an action. Any help would be much appreciated. I've looked for any project like this but have been unable to find anything. 

Question by purpulhaze   |  last reply


how to make a rubber part that doesnt exist ?

Hi good peoples, i work at a place that makes and sells beef jerky and smokies. quite recenty one of the machines we use to cut them from links quit working properly and needs a new rubber pad for the clutch that stops the blade. the problem is the company we bought the machines and all parts for them it died with the owner so we cant replace them. my question is how hard would it be to mold rubber into a new brake pad for the clutch. i will put up pictures of the clutch and pad as soon as i can but i might as well start with the first problem how to cast and mold a rubber sturdy enough to do the job. all info on this would be greatly appreciated side note: now that i have the parts this is what they look like. two very soft rubber wheels with a concave treaded surface. the rubber tread is really worn down hence the need for replacement 

Question by snowfox222   |  last reply


Help with some Project Ideas

For my one of my Mechanical engineering classes i have to make something for a final project and I can't think of anything to make. It just can't be a weapon and should incorporate multiple manufacturing processes (milling, turning, casting, threading, shearing, sawing, shearing, bending, etc.) I was thinking about building a tall bike, but I'm not sure i'll be able to find two bikes to use.

Topic by adamhakon   |  last reply


induction "furnace" from microwave transformer?

Hey guys I've seen around the net that it's fairly easy to make a spot welder from a micro wave transformer /micro oven transformer. So I was thinking if it's possibly to use the same idea to make a induction furnace? I would like to use it for melting/ casting aluminum (...and possibly metals with a higher melting point... if possible) any idea if it's possible.. and how to?

Question by lordl9999   |  last reply


can I open up a flyback transformer? Answered

I have an old broken flyback and I dont want to throw it out yet because there are some goodies inside it. Well I got down to buisness and started cuting the plastic shell, But after taking half of the black plastic off I found outthat It was filled with some type of hard whitesh -yellow cast. I dont know how to take that off. does any one know how to or should I just trash it?

Question by Mudbud   |  last reply


TWIT.TV: Make Mag, Maker Faire, Boing Boing, etc discussed.

The first podcast of the week is the last word in tech. Join Leo Laporte, Patrick Norton, John C. Dvorak, and other tech luminaries in a roundtable discussion of the latest trends in high tech. Winner of "People's Choice Podcast" and "Best Technology Podcast" in the 2005 People's Choice Podcast Awards. Released every Sunday at midnight Pacific.The pod cast is at TWIT.TV - link - And the "death of.....(newspapers, radio, etc.)

Topic by Goodhart   |  last reply


Renovating Old Photographs.

I have some old photographs slides which I have scanned and now have digital copies of them, some of them are well over 40 years old and the colour has deteriorated as would be expected. The main problem is that many of these have taken on a blue/purple cast, see example, does anyone know if their is a way that I an reduce this blueness please? And, yes, that is a very young me at my wedding in 1969!  I do not have Photoshop but I do have Pixelmator which is a similar application. Thanks for any help.

Topic by Allsop   |  last reply


what do i use to make a mold of my face?

Instead of using plaster, I saw on a show someone mix up a powder that he said was made with some kind of seaweed. It was the show "Unwrapped "on the Food Channel. He was making a jello mold of his face, I'm trying to get the name of this powder He uses it because it sets fast and does not stick to skin. also he got the idea while at the dentist getting a cast of his teeth Thank you. Tony Romano

Question by    |  last reply


Tech Shop

Anyone else out there use/go to the Tech Shop in Menlo Park? I've taken 3 of their safty and basic usage classes for the lathe, mill and aluminum sand casting. I want to start making things, but I'm still a little unsure of myself. For a first project I want to make a vise. I found some plans that I want to scale down a little. I will need to either by or make a lead screw. I'll probably try to make one, its a learning experience, so what's the point otherwise? Anyone there have advise?

Topic by GlobalVillageIdiot   |  last reply


[Help] Custom sounds for model

I've created a resin cast of a gun (raygun) from a video game (Black ops 2) and as part of making it as authentic as possible I would like to have it emit sounds I've pulled from the game at the press of a button, much like a toy gun. I don't know where to go with the idea from here. I would like something that's relatively easy to hear and not too quite and powered by batteries. If someone could point me in the right direction as far as parts I would need to achieve this I would appreciate it.

Topic by h1web   |  last reply


Suggestions for Free 3D print ? Answered

I recently won a free 3D print for my instructable on using hot glue as a casting material....  :D But since I've already made an instructables robot for myself, I'd like to have some different thing as my free 3D print.... The thing has to be not more than 3"X3"X3" in size.... I've already seen some good "3-D printing"  related Instructables, But couldn't find a thing that'll fulfil the size condition... Please give only those instructables/links which have the STL files...

Question by Siddharth Jain   |  last reply


Best way for Grounding large(REALLY Large)circuit ? Answered

Could someone tell me how to ground a large electrical circut.I have a die-cast aluminum box, on which there is a strip wire connector which connects all the tiny goundings on the circuit and finally to one terminal.Now, what wire to use for grounding, about 18 gauge or so?I have no idea ,but is is better if the wire is NOT flexi-type.I want it to bend(and stay so) into different angular bends(not a curve)Also i need to put a copper tube on the end of the GND wire, how to attach it to the wire,by screws?? I put pic of non-flexi wire in the post too

Question by mhkabir   |  last reply