Take a nut the next size up from the broken stud and put it on top of the broken stud. Then weld the nut on the inside to weld the stud to the nut and keep on filling the nut until you have filled it to the top. The intense heat will free up the rust by expansion and contraction and you will have a nut to put a wrench on it to unscrew it.

I recall a 50' steel boat a couple of years ago where the previous owner had mounted a 1000 pound dinghy on the cabin top. No reinforcement had been installed to support the cabin top and there was visible cracking of the supports. There is nothing wrong with a little corner cutting, as long as you know accurately what you are cutting.

Kinda like an inverted cup set on a table top (the table substituting for the bottom of the hull), only the table top under the cup is full of holes. Water take-offs (seacocks) are usually attached to the sides of the sea chest and since the sea chest is usually designed to extend above the waterline, the top is often removeable for maintanance.

Shut of the pet cocks to the engine and refill the filter from the top, to the top. That should keep fuel in the lines to the engine.

We saw an interesting design for a swim ladder the other day, they took a typical fixed ladder with a rolled top "U" shape on top, turned it on its top, drilled holes and inserted bolts such that it would pivot down. A lanyard was attached and lead to the water in order that swimmers can pull in down.

The mouthpiece is build in the following parts: - the tenon, the cylindrical part, in the pictures shown on the top - - this is simply made by a stack of cylinders - the body, this is a cylinder for tenon to top of which the diameter is a complex function. So I made this using Nspline and sweep functions.

See if you get better results with this: extra_scale = 100; // increase if needed step = 0.0035; scale = 100*extra_scale; top = [for(x = [0:step:1]) scale * [x, 0.12 * naca_thickness(x)]]; scale(1/extra_scale ) polygon(points=top); scale(1/extra_scale ) %for(p = top) translate([p[0], p[1], 0]) sphere(scale * 0.005); 2016

Take the following case as an example: > p = [ [0,0, 0],[10,0, 0],[10,10, 0],[0,10, 0], > [0,0,10],[10,0,10],[10,10,10],[0,10,10], > [5,5,10], // top baricenter > [5,5, 0] // bottom baricenter > ]; > f = [ > [0,4,5,1] // left > , [2,6,7,3] // right > , [0,3,7,4] // back > , [4,7,6,8,5] // top >

Do View-top, then move mouse to bottom/right corner, drag toward bottom-left, ie rotate around depth, see rotate=[], Z changes. > X is pitch, Y is roll, Z is yaw.

. --- valign --- valign=top doesn't always slam the top of the string against the X axis. If the glyph is below and not touching the baseline, it only adjusts the baseline up to the X axis. Thus text("_",valign="top") has the underscore a bit -Y below the X axis. Similarly with valign="bottom", if the glyph is above and not touching the baseline.