March 14 2011
Update March 14 Removing and Installing Rivets
Since the hull is flush, rivets are not shown on the outside of the hull; it has to be determining where the rivets are positioned in the hull.
Also on a lot of places the angle grinder can not reach the burr of the rivet.
Therefore I was looking for a different method in removing the rivets.
The easiest method I have found till so far is to drill the head off the rivets from the outside to the inside, when the head was removed the rest of the rivet was than punched out to the inside of the boat. The head of the rivets were drilled off, actually this is quite simple with a sharp new drill bit, and copper is a soft material. If you do not want to use directly a drill bit slightly larger than the shank of the rivet you can first drill a small pilot hole with a small drill bit followed by a bigger seize drill to remove the complete head.
Also in this case one does not have to worry that the wood is damaged since the plank will be renewed.
Then the rivet can be knocked out with the burr to the inside of the boat.
After the new planks have been glued in place and fixed with a screw the new rivets could be installed.
To prevent that the frames become a Swiss cheese the planks were drilled from inside to outside on the position of the old rivet.
The next step was to prepare the hole for the plug which covers the actual rivet.
This was done with a taper point drill which is of a set with a matching wood plug cutter.
After that the rivet was punched into the hole one has to do this carefully since the rivet is from copper and when one wants to make this a fast job there is a big chance that the rivet will bend in the hole.
This since the next step the actual riveting is not that easy especially with rivet heads which are sunk into the wood. The rivet head on the outside needs to be kept in place with a punch and hammer while from the inside the rove is placed over the nail with a rove punch.
Nail is than cut to the desired length and than with a hammer rounded over the rove while from the outside pressure is placed on the nail head to prevent that the nail is pushed back through the hole.
Additional information can be found on the below web side.
After all the rivets are in place the wooden plugs can be inserted in the holes.