Used to have a simple calc for depth and diameter of drilling versus extracted weight for balancing, seems to gone astray, any suggestions? Metric prefered Olov

Oli,
I think I have one at the office. It may be next week before I am back there but I will look for it.

Ronnie

Calculate volume:

Steel = 490.0608 #’s/cu ft or 0.2835 #/cu in

Aluminum = 0.0992 #’s/cu in

http://www.vibronurse.com/Balance.html
You can download this program to your pc too.

If I was drilling holes in a bowling ball I'd use this chart
https://www.buddiesproshop.com/37/Weight_Hole_Removal_Chart.htm

When my correction holes are 1 m long I use this one -
http://www.jfe-steel.co.jp/en/products/wirerods/table_of_weight/index.html

getting closer -
http://www.lapham-hickey.com/Products/ColdFinishedSteel...GroundPolished16.cfm

steel holes 1/4 - 1 inch diameter and 1 inch deep, with adder for the drill point.
http://www.ghbalancer.com/techinfo/drill_chart.htm

Our firewall blocked me from checking this one out

http://www.sofotex.com/downloads/d15651.html

Alec,
That is a neat calculator. I am glad some of you came up with answers for Olov. I went by the office today and found the book I was looking for and the section labeled hardware weights, all of the pages were missing. But I think I like the calculator better than the chart anyway.

Thanks,
Ronnie

Ronnie,
The only disadvantage with this calculator is that it's necessary to convert the drill fraction numbers diameters into metric ones.

Alec,
I guess I have found a new use for my digital calipers. I am really glad I got the one that does standard and metric.

Ronnie

Thank´s for the help, exactly what I was looking for. Would balancing the bowling ball improve the game? I would need that. Around what axis do you think it´s best to be balanced? Olov