"Finding the center is challenging"

Isn't that just a matter of geometry or trig
to find the center ?



----- Original Message ----- 
From: "Barry Lotz" 
To: 
Sent: Monday, July 19, 2010 8:13 AM
Subject: Re: A Sticky Question


Jerry
I've successfully used acrylic stock from a plastic supplier locally with the 
appropriate glue. I found that while machining or cutting it I had to be careful 
not to get it hot. It will melt. I used thin sheets for the sides and round 
stock or a thicker sheet cut in a rectangle/square for the center. Finding the 
center is challenging.
Regards
Barry
http://www.seismicvault.com 




________________________________
From: GPayton 
To: psn-l@..............
Sent: Mon, July 19, 2010 6:42:55 AM
Subject: A Sticky Question


In years past, I had difficulties in finding a "manual" coil winder and ended up 
with an old fashioned had drill. (As you know, you have to search using the 
correct words or your mouth pursed just right to be successful.)

Anyway, that hand drill is what I ended up with. The EBay choices shown by 
Barry are interesting. Thanks, Barry.

Never-the-less, in past, I had more trouble finding proper shaped ready-made 
spools or bobbins to wind a coil. And, if I tried to construct a rectangular 
shaped form, I had trouble getting the sandwiched parts to stick together! I 
suppose that I did not have the correct adhesive. I tried several without 
satisfaction.

If anyone knows the secret to building a rectangular form, materials & glue, I'd 
appreciate knowing it.

Regards,
Jerry
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