The heavy brass surrounds are each drilled slightly differently so they must be clearly marked on fitting to ensure they do not get mixed up or misaligned.
Fitting involves clamping in place to use the porthole itself as a jig before drilling and tapping the steel and temporarily fixing with 5/16"W screws.
On final fitting after blasting and painting they will be secured with brass domed screws.
No comments:
Post a Comment