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The 0.25 in rod end is already an inch long so the minimum depth of inert is 1 inch.
Materials
x1 46610-DL
Can produce 14 5-in test tubes
Aluminum Rod (for milling our own insert, alloy and site unknown)
Some kind of acid etch kit (not necessary but good for testing bond strength variable)Obsolete and not able to purchase kits anymore
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