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Think & Tinker, Ltd.
P.O. Box 1606, Palmer Lake, CO 80133
Tel: (719) 488-9640, Fax: (866) 453-8473
Sales: Sales@thinktink.com, Support: Support@thinktink.com
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Think
&
Tinker
Ltd.
SkypeMe at
"thinkntink"
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Tel.: (719) 488-9640
Fax: (719) 481-0464
Think & Tinker, Ltd.
Copperclad Backing Material Entry Foil
(minimum order US$50.00)
| Description |
To order or check price, click on button |
| Copperclad - Copperclad PCB substrates are commonly available with copper on one side (single-sided) and copper on both sides (double-sided). The thickness of the copper foil is specified in ounces per square foot (Imperial units) or microns (SI / metric). "Half ounce" foil is 0.00065" (17 micron) thick. "One ounce" foil is 0.0013" (35 micron) thick. Half ounce, double-sided copperclad designated H/H or .5/.5) is preferred when a board will be plated before etching. One ounce double-sided copperclad (designated 1/1) is often used by shops that use mechanical milling/etching systems to "etch" circuit patterns when through-hole plating is not used. |
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| Entry foil - Soft aluminum sheet used during drilling to reduce drill breakage and burr formation. Entry foil is placed on top of the substrate being drilled so that the drill bit contacts the smooth aluminum surface first. Because the thin (0.008" to 0.012") aluminum sheet may tend to "climb" the bit after penetration, entry foil should only be used on machines equipped with a pressure foot that anchors the foil before the drill contacts. |
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| Backing material - Backing material, also referred to as "exit foil", is placed beneath the substrate being drilled. It provides a thick layer of soft material for the bit to terminate in before contacting, and damaging, the work surface of the drilling machine. |
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Established 1990
On the web since 1994
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Sales: 1-(719) 488-9640 Tech Support: 1-(719) 488-9640 Fax: 1-(866) 453-8473
Copyright © 1994 - 2014 Think & Tinker, Ltd.
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