Is it desirable to use double margin drills?
What are the avantages and disadvantages?
When/where are they best used in RV construction?
Are they equivalent, in end result, to using a reamer?
Are they useful or desirable in the drilling of the prepunched holes in RV, preparatory to riveting?
Are they only desirable in certain special sections of the build?
Do they last well, or would you need to buy more than one of each size to do a QB (I'm thinking of Pan American brand)?
Are there other good brands?
John
What are the avantages and disadvantages?
When/where are they best used in RV construction?
Are they equivalent, in end result, to using a reamer?
Are they useful or desirable in the drilling of the prepunched holes in RV, preparatory to riveting?
Are they only desirable in certain special sections of the build?
Do they last well, or would you need to buy more than one of each size to do a QB (I'm thinking of Pan American brand)?
Are there other good brands?
John
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