you are concerned with marking and drilling the the center of the hole. Make a + mark where you want the center of each hole. You can punch the center of that mark with a nail to help the bit stay in the middle.
No, because the answer depends on what you are drilling through and why. Drilling a guide-hole through a wooden plank is somewhat different from drilling for an ice core in the polar regions or for minerals underground. So the question is so poorly specified as to be unanswerable.
yes
get a protractor, find a way to set the pot to it, easy way to do that is drilling a hole in the center. now connect ur pot to a dmm and turn it at any angle to get the resistance there
The country of origin and the denomination of the coin would be a big help. Holes in the centre of coins is no longer as widespread a practice as it once was, although some countries continue to do so as a tradition.
No it's the hole that kills collectible value. If the coin is silver it has scrap value
The hole kills the collectible value of the coin. It's likely only worth about $25.00 for the silver content of the coin. Take it to a coin dealer for an assessment and value.
The homophone for drilling a hole is "whole."
You could wrap the coin in gold or silver wire and form a loop to pass the cord through. You could find a mount, called a finding, of the right size; these come in every imaginable shape and size, and are meant for mounting polished stones into. You could embed the coin in acrylic plastic and drill a hole in the plastic. Doubtless there are other methods that wouldn't destroy the coin by drilling it.
A hole in any coin that was not minted with a hole would make it worthless. Modified coins have no collector value other than whatever the scrap value of the metal might be.
1833 is a common date for Large Cents. The hole likely killed the collectible value of the coin. Take it to a coin dealer to see if it still has any value.
Drilling centre and guided drilling get your hole in precisely the correct place.
August 11, 2009 Generally, drilling a hole in a coin lowers its value considerably. If your coin was minted in Philadelphia or San Francisco, then it is probably not worth too much more than gold value which is $114.32 today. If it was minted in Carson City then it probably has a little more value since these were minted in lower quantities.
The hole totally kills the collectible value of the coin. Unless you find someone that wants it, the value is only for the silver, and that depends on how much weight was lost by the hole..
The hole in the 25 peseta coin was a traditional design feature dating back to ancient times when coins were strung together for easy carrying. It was also believed to help distinguish the coin from counterfeits.
The value is just for the silver in the coin
More than one Hong Kong coin had a hole in the middle. These coins were made for many years. Be more descriptive. Add the date and words on the coin, then I can answer your question.