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Custom Lure Factory

Aluminium Mold To Cast Custom Lures

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Hi Guys,
I'm new on the forum and I'd like to share with you my way of making custom lures.
I use my CNC machine to make aluminium molds, my lures are made of hard urethane foam.
Smallest lures are just 15mm long 15mm.jpg
This model I make in 4 different sizes : 15mm, 20mm, 25mm, 35mm made for ultra light and light spinning.
Here you have few different models to compare sizes, biggest banana shape are 50mm long and the smallest 15mm.
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Regards
Custom Lure Factory

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That's online lureporn!  Hahaha

How long did it take your machine to do that?

How do you fill your molds?

So many questions, so little time!

I'm a 65 year old carpenter, so CNC is not in my future, but it is fun to see and to learn how it's done.

Thanks.

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That's online lureporn!  Hahaha

How long did it take your machine to do that?

How do you fill your molds?

So many questions, so little time!

I'm a 65 year old carpenter, so CNC is not in my future, but it is fun to see and to learn how it's done.

Thanks.

Hi Mark,

I'll try to answer your questions :)

It takes few hours (depending on size and no cavities) to cut mold as there're few stages: roughing, finishing, drilling, placing pegs. But before you run it on CNC it has to be designed on computer and changed into toolpaths.

I use urethane expanding high density foam which is very hard - fill cavities with right amount of foam and put to halfs together, obviously there're wire and weights already in mold. Than just wait untill foam sets and ready to open.

That's more or less the way it's made.

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How many times does the foam expand? It must be close to 2 times or you would loose more than you wind up with the finished product?

Is the hardness strong enough for larger baits such as for Pike/Musky or would they just tear them apart?

Do you prime the foam or seal it?

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How many times does the foam expand? It must be close to 2 times or you would loose more than you wind up with the finished product?

Is the hardness strong enough for larger baits such as for Pike/Musky or would they just tear them apart?

Do you prime the foam or seal it?

Hi,

Foam expands x8 it's nearly as hard as oak, there's no need to seal foam which is big advantage when compared with wood - where small leak is able to damage lure because it expands and change its

properties from eg. floater - suspender to sinker. Foam doesn't require any seal. I use foam in my jerkbaits and comparing with wood construction there's little chance that it could be "demolished" by musky or pike, nothing is glued - there's through wire with placed weight on it.

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Thanks for the info

How is the density when it comes to buoyancy. Do you find it difficult to get the bait to sink and do you use a lot of lead?

I would think that the foam would be super buoyant like a cork?

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Very nice, I asked a machine shop who specializes in making lure molds....they told me $2000-$6000 for a two piece lure mold! Guess it takes many hours to draw up a lure on the computer that's what drives the price.

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Thanks for the info

How is the density when it comes to buoyancy. Do you find it difficult to get the bait to sink and do you use a lot of lead?

I would think that the foam would be super buoyant like a cork?

More dense foam - less buoyant and vice versa, It's more or less the same like with balsa wood.

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Very nice, I asked a machine shop who specializes in making lure molds....they told me $2000-$6000 for a two piece lure mold! Guess it takes many hours to draw up a lure on the computer that's what drives the price.

Thanks. Yes it's time consuming - many stages and various equipment involved to produce mold. Prices in my case depend on the size of the lure, how complex design is and how many cavieties, but molds last forever.

However prices that you've said are pretty high as I would charge 25-30% of what they ask.

Edited by Custom Lure Factory

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Do you use a release agent in the mold?

Hi,

If the mold is aluminium and smooth enough - never had problems with getting lures out but usulally apply some release agent every couple of casts - certainly it helps to get them out easier.

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How long before you can take out the lures and start another batch. And what size can you go up to. Great video and lures.

Thanks

Wayne

It takes about 30 mins before demolding. There's no size restriction realy - my CNC machine has got big working area and could cut lures even 30 inches long :)

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I had looked into having some molds made but ended up just sticking with the RTV or POP based on my limited amount of cranks I was making.  Currently have so much wood haven't made any foamies in some time.  Might have to dig around and see about making some more now after reading this one.

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