Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
TonkaBass

centirfugal mold

11 posts in this topic

Has anyone made there own. Just looking for an end of winter project and to make some custom jigs for personal use.

Share this post


Link to post
Share on other sites

Why? Just be sure your mold is preheated and you use alloy free lead (no tire weights). You should not need the centrifugal force to pour perfect castings.

Share this post


Link to post
Share on other sites

why not tire weights? i use them to make sinkers for catfishing all the time. just curious

Share this post


Link to post
Share on other sites

because tire weights are alloyed lead, it freezes at a higher temprature. I want to use a centrifugal mold so I can make a wax model of a jig and them replace it with lead. I knew a guy who made one and used it to make jewlery. The amount of detail you get get is awesome. Also it would be a lot better than a machined mold and cheaper. I could play around with with the different designs I come up with until I find one I like, then I could get a mold made for that one.

Share this post


Link to post
Share on other sites

So you want to try investment casting!

Check out jewlery supply resources and you should be able to find a setup. I think they work on a spring principle where you pour the metal and let it spin!

Share this post


Link to post
Share on other sites

Yep that's exactly how they work. I'll have to do some research for this one.

Share this post


Link to post
Share on other sites

Thats a pretty big operation to set up. I used to have one. My suggetion would be to wax your patterns and go to a dental lab and ask them to cast them for you. They will not use lead but a non precious alloy. If you want to do it yourself you will need the centrifuge, investement rings and bases. Investment,tongs and a torch. These can be found in jewelry and dental lab cataloges. You will see they are pricey. Another way to go is with silicone molds. You can pour those directly with lead. This is much faster and you can get as much detail as you want depending on your mold making abilities.

Share this post


Link to post
Share on other sites

Why not try this: Since the initial pressure in the mold is a function of the specific gravity of the material times the sprue height, why not burn out the investment, fix a tall sprue pipe to the plaster and quickly pour the metal. You should get a hammer effect as the sprue fills up and pushes the molten metal into the mold cavity.

Share this post


Link to post
Share on other sites

so just use the weight of the lead to fill the cavity like on a normal mold, but make the sprue longer? I wonder if you would have to keep the sprue pipe hot the enitre time with a torch to keep the lead from freezing and clogging it. Sounds like a good idea though.

ddbyday- how do you make a silicone mold??? what kind of silicone do you use?

Share this post


Link to post
Share on other sites

Pure lead pours with as much detail as a centrifical lost wax investment casting. The investing and casting method is way too precise for a fishing lure cast with lead. As said before avoid the wheel weight lead. It is too hard and does not cast well. Investment(the material you encase your waxed jig) in is designed to compensate for the dimentional shrinkage or expansion of the object you are casting when it goes from a molten state to a solid. This ideally would produce an exact repica of your design. We are talking microns. I assure you this is not the way to go. U tube has some very good tutorials on mold making. The silicone is basically vulcanized rubber. Hilts molds is now taken over by another operation but you can get the silicone blanks which you vulcanize yourself. There is a really nice video on u Tube about centrifically casting vulcanized rubber molds for high production castings.

Share this post


Link to post
Share on other sites

Awesome info! Yeah like I'm sure you can tell, my eperience with these types of molds is limited. I have seen it done though, and remember it as being pretty simple, but I guess some things are easier said than done. Thanks for the information though, i appreciate it!

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Posts

    • that would be samanthasquatch 
    • It's a female Bigfoot,  silly.
    • You can save the mapping data on an SD card. In order to create a map you will need the Zero Line Card. You will take the SD card and plug it into your PC. Down load the map data into the zero line software. The software than creates the map and uploads it to the zero line card. It is typically recommended to use an SD card for the data as once the zero line card is full of either maps or map data another card will need to be purchased.
    • whats a samsquatch?  lol
    • Nope....don't need friendseyeguy54..... It was a darn samsquatch!
    • Way to get him out MM!  I'm sure he appreciates it.
    • I believe some units come with maps of some lakes but probably wont have any real detail as far as contour lines.  I think most will have a map of the US but when you zoom in you wont get much for detail on lakes and If they do contours will probably be 5-7ft apart.  If you want to put data on a card you will need a zero line card for mapping. About $150 i think.  8 hours should give you quite a bit of mapping.  Best would be to buy from a retailer so someone with knowledge of the product can show you how to run it.  You might be able to take some snap shots of sonar and put on a blank card but don't think you can map with it. I would get a Lakemaster card for the area(s) you want to fish.  Worth every penny.
    • Turkey season is over for my nephew!! It was a long season with many hours spent in the blind. He seen more turkeys then ever before and had a toms close enough to grab. It is going to be nice to sleep in. Until fall turkeys!
    • Heading up to Devils in a couple weeks and again later on.  Doesn't look like a lot of activity on here.  Tryng to get an idea whats happening before I go.
    • I have been out the last two days locally and haven't set the world on fire. Caught a few each day, but fish have been scattered. Lake is loaded with curly leaf mats this year, so that hasn't helped things. Once that starts dying and weather warms up, things should pick up.
  • Our Sponsors