Replying to Finding a good worm gear set !

Hello,

I'm working on a timelapse slider and I now need some gears, more precisely a worm gear set with a reduction ratio of about 1:20-1:40 in steel.

I've been searching on eBay but cannot find anything useful, I just need one to get the job done, not something super fancy !

If possible, I'm looking for a website where I would be able to custom choose what gear I'd like !

In the previous version on my slider I used a Lego worm gearbox !

But it wasn't strong enough and everything broke.

If you have any links or ideas where i could find some it would be great

Thanks a bunch

Joris