Thread: Coil Winder

Thanks Grahame.

I don't know what happened to my first reply to you but I will try again.

I Need coil inserts of the lowest carbon possible. The common usage at the moment is 1018 I think they call it mild steel . Dimensions are 1 1/4 inch long by 5/16 wide (round) with a thread of 1/4 in the bottom. I need about 100 depending on the costs etc including freight

Originally Posted by Grahame Collins

Wire is drawn from AISI 1006.Would that be malleable enough for you?

Grahame

Should be I think. I need 1 1/4 x 5/16 with a thread of 1/4 at one end

Thanks Grahame.

If I understand correctly you have a 5/16" diameter rod x 1 1/4' long that you want a 1/4" tapped hole in one end 1/4" deep.

I reckon you need to talk to a engineering shop with a CNC lathe.
It would rip through a 100 in no time and be perhaps a lot cheaper than someone doing the same thing on a manual lathe.
Phone book and looking for enginneering lathework CNC

You had better tell em what I/4" thread ? UNF? ( most likely or is it something else? )

Cheers
Grahame

Thanks Grahame,
I did ask a few people and I get the impression it is too fiddely and not enough volume to set up the machine, but will ask around a bit more. Gus

Maybe you might find someone local to do it.
You may be surprised how many lathes might be found under houses and in backyard sheds.

Maybe some retired person with some time on his hands and the need for a few dollars might be close by.

Grahame

Originally Posted by Grahame Collins

Maybe you might find someone local to do it.
You may be surprised how many lathes might be found under houses and in backyard sheds.

Maybe some retired person with some time on his hands and the need for a few dollars might be close by.

Grahame

That would be good! Where are they?

100 of them would take a whole lot of time on a manual lathe..... it would for me anyway.

Setup time for that sort of work would probably be 1.5 hrs at $125.00hr, according to my brother who does that sort of work. The machining would not take very long at all once the machine is set up, using 3/8" stock in the bar feeder. If your volume was up around 1000 units, the cost per item would be more resonable.

Whats the application and cost requirement per item?

Hi InkSpot

This might be what you're after http://cgi.ebay.com.au/Tattoo-MTS-CO...sid=p1638.m122

You might also like to consider using a variable speed drill - you'll need to make a fitting (bolt?) to take the coil. Carba-Tech are selling a clamp to mount a drill to a bench (by memory only $5). If you want you could then add a footswitch to turn the drill on/off and a simple counter for the number of turns. The wire could be guided on by hand or from a mounting to hold the supply reel. In that case passing the wire through an adjustable felt clamp would provide a measure of tension control. This would all be cheaper than the above link.

Whats the application and cost requirement per item?

Silly me.

I re-read the 1st page of the thread and you had already covered the application.

Hmmmmm...... Must be beer time!

The estimated costs - on the trot - would be as follows-
Set up - $ 150
After that - per unit - Material $ 0.50 + Labour $ 0.25 + O/Head $ 0.25 = $ 1.00
Add: Profit and Packaging & Freight Cost $0.35 For a total FIS cost of $ 1.35 per unit. This would be for the first 100 units. After that the unit cost of $ 1.35 would probably be ok. This is what I come up with but I am a finance man and not a practical hands on maanufacturing man, so who can do the exercise as well? Looks like there is not too much money to be made this way unless there is either a big volume or something else. I have something else as well.

Thanks Grahame.
I hope that will be the case.

Originally Posted by floobyduster

Hi InkSpot

This might be what you're after http://cgi.ebay.com.au/Tattoo-MTS-CO...sid=p1638.m122

You might also like to consider using a variable speed drill - you'll need to make a fitting (bolt?) to take the coil. Carba-Tech are selling a clamp to mount a drill to a bench (by memory only $5). If you want you could then add a footswitch to turn the drill on/off and a simple counter for the number of turns. The wire could be guided on by hand or from a mounting to hold the supply reel. In that case passing the wire through an adjustable felt clamp would provide a measure of tension control. This would all be cheaper than the above link.

Thanks Floobyduster.
The problem is that I am not very good at the practical end of manufacturing things and certainly envy the guys who can do so much with their hands and brains. That is why I need a coil winder that does the job for me without too much fuss.

Originally Posted by Fossil

100 of them would take a whole lot of time on a manual lathe..... it would for me anyway.

Setup time for that sort of work would probably be 1.5 hrs at $125.00hr, according to my brother who does that sort of work. The machining would not take very long at all once the machine is set up, using 3/8" stock in the bar feeder. If your volume was up around 1000 units, the cost per item would be more resonable.

Whats the application and cost requirement per item?

Thanks Fossil. I have no idea what the volume will be. At this time it is just getting a lot of things together and see what the likely outcome might be. Of course I need to pay my way but need considerable help to arrive at the conclusion to go with it or to give it a miss. See a bit further some of my calculations and I think we are in the ball park.