Cheap, easy beginning coil winder

R.G. · 08-25-2007, 11:26 PM

I was in Harbor Freight today. They're having a sale (as always) but I noticed that this:

was on sale for $30.

What made me notice it was the grinding wheels had been stripped off the grinder, and that made me look, and then I noticed the single-knob variable speed control.

I think if you took one of these and relocated the knob to a foot pedal, you could just remove the grinding wheels, attach a bobbin holding disk, and have a manual coil winder ready to go for $30, including having a warranty on it.

NightWinder · 08-25-2007, 11:33 PM

Quote:

Originally Posted by R.G.

I was in Harbor Freight today. They're having a sale (as always) but I noticed that this:

was on sale for $30.

What made me notice it was the grinding wheels had been stripped off the grinder, and that made me look, and then I noticed the single-knob variable speed control.

I think if you took one of these and relocated the knob to a foot pedal, you could just remove the grinding wheels, attach a bobbin holding disk, and have a manual coil winder ready to go for $30, including having a warranty on it.

No, you have to change the taper on the knob....Damn thing starts at about 6,666 rpms, with hardly no play.....thing is feather light too, which you would have to screw it to something....Speed knob needs replaced, shaft is not centered...there is a woble too.

R.G. · 08-26-2007, 12:08 AM

Bummer - you'd have to not only pull off the grinding wheels and shrouds, you'd also have to change the pot out when you put it into a foot pedal for speed control, and also screw it down to something; on top of that, you'd have to try out the one you get and make sure there's no wobble.

Everybody, ignore this. It's way too much extra work! it makes a lot more sense to make the whole winder up out of plywood and old sewing machines.

Satamax · 08-26-2007, 09:29 AM

RG, the only thing which might be a problem is, reliability of the electronics. How long will they last slowing down and accelerating? Besides this, i'd like to see one showing up in euroland for that cheap

R.G. · 08-26-2007, 01:51 PM

The motor is a brush-type universal motor, I think. At least it has brushes. The electronics is, frankly, the most trivial part of this. The mechanics of getting a motorized spindle set up for variable speed is the hard part - to me at least.

I almost bought one to play with. Maybe I will go back and get one.

... like I need another project...

Rosewood · 08-26-2007, 04:11 PM

A variac would solve the speed problem but that would end the "cheap" winder part. It would be a nice compact unit. Two coils at once??

R.G. · 08-26-2007, 04:20 PM

I looked in the online manual for the thing at the HF web site and there is some kind of electronic speed control board inside the base. I think that one could work with that to get a lower controlled speed. Not sure, but probably.

Satamax · 08-26-2007, 04:35 PM

R.G. I can't seem to be able to find it on the HF site. Would you mind giving us a link?

Thanks.

Max.

R.G. · 08-26-2007, 07:48 PM

http://www.harborfreightusa.com/usa/...bCategoryName=

R.G. · 08-26-2007, 07:49 PM

I did a search on "mini bench grinder" and found much the same thing at several ebay tool sellers, although at higher prices.

NightWinder · 08-30-2007, 04:50 PM

Ive seen this same one for $90.00, and the attachment is another $35. I got mine locally for $27.00 with the attachment ????? Thats strange shit right there. Gotta shop good for your tools. Its a cool little grinder to have. Very small too.

08-25-2007, 11:26 PM	#1
R.G. Lifetime Member Join Date: May 2006 Posts: 1,051	Cheap, easy beginning coil winder I was in Harbor Freight today. They're having a sale (as always) but I noticed that this: was on sale for $30. What made me notice it was the grinding wheels had been stripped off the grinder, and that made me look, and then I noticed the single-knob variable speed control. I think if you took one of these and relocated the knob to a foot pedal, you could just remove the grinding wheels, attach a bobbin holding disk, and have a manual coil winder ready to go for $30, including having a warranty on it.

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08-26-2007, 12:08 AM	#3
R.G. Lifetime Member Join Date: May 2006 Posts: 1,051	Bummer - you'd have to not only pull off the grinding wheels and shrouds, you'd also have to change the pot out when you put it into a foot pedal for speed control, and also screw it down to something; on top of that, you'd have to try out the one you get and make sure there's no wobble. Everybody, ignore this. It's way too much extra work! it makes a lot more sense to make the whole winder up out of plywood and old sewing machines.

08-26-2007, 09:29 AM	#4
Satamax Senior Member Join Date: Jun 2006 Location: Southern french alps, right by the Italian border Posts: 752	RG, the only thing which might be a problem is, reliability of the electronics. How long will they last slowing down and accelerating? Besides this, i'd like to see one showing up in euroland for that cheap

08-26-2007, 01:51 PM	#5
R.G. Lifetime Member Join Date: May 2006 Posts: 1,051	The motor is a brush-type universal motor, I think. At least it has brushes. The electronics is, frankly, the most trivial part of this. The mechanics of getting a motorized spindle set up for variable speed is the hard part - to me at least. I almost bought one to play with. Maybe I will go back and get one. ... like I need another project...

08-26-2007, 04:11 PM	#6
Rosewood Senior Member Join Date: Jun 2007 Posts: 136	A variac would solve the speed problem but that would end the "cheap" winder part. It would be a nice compact unit. Two coils at once??

08-26-2007, 04:20 PM	#7
R.G. Lifetime Member Join Date: May 2006 Posts: 1,051	I looked in the online manual for the thing at the HF web site and there is some kind of electronic speed control board inside the base. I think that one could work with that to get a lower controlled speed. Not sure, but probably.

08-26-2007, 04:35 PM	#8
Satamax Senior Member Join Date: Jun 2006 Location: Southern french alps, right by the Italian border Posts: 752	R.G. I can't seem to be able to find it on the HF site. Would you mind giving us a link? Thanks. Max.

08-26-2007, 07:48 PM	#9
R.G. Lifetime Member Join Date: May 2006 Posts: 1,051	http://www.harborfreightusa.com/usa/...bCategoryName=

08-26-2007, 07:49 PM	#10
R.G. Lifetime Member Join Date: May 2006 Posts: 1,051	I did a search on "mini bench grinder" and found much the same thing at several ebay tool sellers, although at higher prices.

08-30-2007, 04:50 PM	#11
NightWinder Senior Member Join Date: Jul 2006 Location: Detroit, Michigan Posts: 1,070	Ive seen this same one for $90.00, and the attachment is another $35. I got mine locally for $27.00 with the attachment ????? Thats strange shit right there. Gotta shop good for your tools. Its a cool little grinder to have. Very small too.

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