Drill, 35mm diameter, 500mm long

[EnSvenskBäver]

Hello! I need to drill up to about 500mm at the end of pressure-treated 95x95 posts. The plan is to place the posts onto existing metal rods from a previous fence. The old rods have a diameter of 35mm. The question is what combination of tools might work for this.

I’m worried that a center drill on an extender might risk becoming unstable or breaking. I don't know if there are spiral drills in that dimension, and if they are available for rent somewhere? It feels like it could be very expensive to buy.

 

[patrikd84]

Looked at hole saw?

 

[13th Marine]

Hole saw doesn't feel quite right.
I googled quickly but didn't find any 35mm spiral drills, but it doesn't feel impossible that they exist.

 

[topmount]

Really impressed by you if you get it straight.

https://lunatools.com/sv/product/traspiralborr-400mm-35mm/

cut the pipes so they are 30 cm long and use a drill like this one.

 

[RalleB]

There are center drills that are 400mm long and 35mm

 

[Grod4n]

There are publishers, but as others have said, I think it will be difficult to get it straight.

 

[mrVoodoo]

A spiral drill is probably the best type of drill for that purpose. 35mm is available for a reasonable price, and then you can use an extender. It's probably possible to find one that's sufficiently long too, but there's a risk that it might cost a lot of money.

https://www.amazon.co.uk/Irwin-1050...3XDJ9V7X7JK&psc=1&refRID=ATEMV6BTZ3XDJ9V7X7JK

Are there many posts? Is it aesthetically okay to use split posts? (e.g. 2 pieces of 45x95), then you would have the option to mill the groove instead, which feels like it would be a bit easier to get it more precise/get the posts straight than drilling. On the other hand, it might be relatively easy to tap the iron a bit to get the post in plumb.

 

[EnSvenskBäver]

Really impressed by you if you get that straight.

[link]

cut the pipes so they are 30 cm long and use a drill like this.

That's exactly the conclusion I came to as well!

 

[EnSvenskBäver]

Thanks to everyone for the help, I've found a 300mm drill, and will cut down the old stängerna instead

 

[Marsman80]

Thank you all for the help, I've found a 300mm drill, and will cut down the old rods instead

Looking for exactly a 35 mm drill that is 30 cm long. Where did you find it?

 

[Fotografen]

Thanks everyone for the help, I found a 300mm drill and will cut down the old rods instead

Did you get it straight and everything else?