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How to drill a really big hole.
OK..I made a mistake thinking I could sit the EQ8 and RASA on the observatory floor and avoid the obvious problems..I was going to move it to the central pier but I like having the EQ6 and 115 mm refractors there..or I would be happy not to go thru all that would be required..which I may have to do..however I think if I can drill thru the floor in three places so the three legs of the EQ8 tripod sit on piers that go to the ground and a block and pad etc which I can make stable...the floor is 19 mm of particle board, with 19 mm of ply on top and some imitation timber floor on top..I can remove the imitation stuff but the question is how to get holes thru the flooring.
It would be ideal to have six inch holes ( four seems possible but six would be so much better...and this is guess work so big is best...( maybe one foot dia with six or four inch at top) so I can have three six inch poles made from sewer pipe with a couple of star pickets inside filled with concrete...they can come down to a pad anchored to star pickets driven into the soil...just do as much as I can approach there..anyways not perfect as I can't get to bed rock but the middle pier uses this approach and I have no complains with it...
So any ideas...is there a six inch key hole drill bit out there?...the other way is to cut thru with the chain saw which is probably the smartest approach...but not as neat and I really don't like using a chain saw that way..you can get into enough trouble just using them correctly...however that seems inevitable.
Alex
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