Using a graphite (lead) pencil to delineate a margin can leave a residue on the wax pattern. This can cause porosity in the casting. Always use a margin liner pencil for this purpose. This pencil utilizes a red wax refill for cleaner burnout and smoother margins.
This wax pencil is available at Lab Depot.
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Using a graphite (lead) pencil to delineate a margin can leave a residue on the wax pattern. This can cause porosity in the casting. Always use a margin liner pencil for this purpose. This pencil utilizes a red wax refill for cleaner burnout and smoother margins.
