Thread: DIY Induction Annealer

@Mick Hunter yep its 3mm thich Ali angle. I threaded all the holes to make it easier to bolt up.

Lets see some other creations!!

I have moved all the induction annealer build documentation, parts list etc. to a more permanent website as my dropbox links keep getting broken.

https://www.mgnz-makes.com/

Quick update on this project. I'm starting to work on an automatic case feeder design add-on for the annealer. The plan is to 3D print the parts and provide the CAD for others. The feeding mechanism is going to be driven by a single servo connected to the arduino and synchronised with the free-run mode in the software. The case will be picked from the hopper and then dropped down a tube into the annealing coil.

This is the start of the CAD:

Nice. I look forward to seeing how this develops.

Good thinking @MGNZ

Still have a few feed bugs to work out, but not bad for a first run.

https://youtu.be/BujviMWKw0o

Much better feed reliability with 260 cases.

https://youtu.be/NZUAKkAxfk4

Clicked "like" but was thinking we need an "excellent" option instead.

Nice work.

Originally Posted by MGNZ

Much better feed reliability with 260 cases.

https://youtu.be/NZUAKkAxfk4

Maybe the edges of the case slot need to be taperd outward a bit?

Originally Posted by 300CALMAN

Maybe the edges of the case slot need to be taperd outward a bit?

Yeah, was thinking the same thing. Or widening the slot a bit to accept slightly skewed cases. The orange outer wheel is removable without tools to allow for different case size versions to be swapped out.

Also noticed that 4 of the 300WM cases will bind across the top of the wheel - whereas the 260 doesn't. May also be contributing to the problem.

Slowing the servo sweep might also help a bit too.

Question for those that have done their annealers.

What wall thickness copper pipe did you use for your coils? I bought some 1/8 copper tube that has a 30 thou wall thickness and the pump won’t pump through the coil. It pumps fine through everything else.

Have just ordered some other 1/8 tube with a 14 thou wall thickness from a hobby shop which will give me more volume / less restriction through the coil.

Anyone remember what you used?

@Mick Hunter I used 1/8 (3.2mm) with a wall thickness of .03 thou (.76mm).
Works good, maybe your pump isnt up to that? Can you blow through it? you can probably get it to gravity feed too. I have made 4 coils with this dia pump works on all of them.
https://www.aliexpress.com/item/4000...1c674c4dtYpyNP

Watch you dont flatten the thinner wall tubing, try getting it warm when you start bending it.

Thanks John, Yes I can blow through it. The tubing I have ordered i think will present more problems as it is only 300mm so I can see a join coming with wont be easy.
Will keep looking for some longer thinner tube

Those copper tube water cooled contraptions are sooo last year

https://youtu.be/YbcZFDYERic

I will have some 750"F templaq turning up next week for those guys that wanted it.
Ideally 4 people would be grate then I havent lost any money!

So far I have @Mick Hunter @Morepork @kristopher

Anyone else $25 plus postage? first person to reply on here can be the 4th.

I'll go with it thanks John. Please let me know the payment details. Cheers