The Home Machinist!

Responding to an old thread - THis summer I did some grinding on some polyester (PET, Ertalyte is the trade name) parts. I used the lathe chip tray flange to steady the part while grinding. I did not bother to wipe down the lathe when finished. I was away from the lathe for several weeks. When I cam...

I'll pile in on this older thread. If you cut away the rusted metal and your adhesive covers the entire overlap joint and flows around the cut edge of the original metal (to encapsulate the bare edge), your joint should be good for years (mine are going on about 5 or 6 years at this time on my winte...

My focus in attending NAMES is different than many. While I appreciate the skill involved (skill that I don't have, nor have the patience to learn the skills needed) in creating most of the models on display, my personal focus is visiting the vendors and if/when convenient to attend some of the semi...

thegallery:

My pin failed in bending, not shear. That said, your pins at 1 inch dia have about 3x the resistance to bending than my 0.75 dia pins. Thanks for sharing info about your press.

One of these days (years) I should open up the holes on my press to accept 7/8 dia pins.

thegallery: What dia are the pins that support the platen? I'd be a bit concerned about them being strong enough to restrain 50T. I have a Harbor Freight 30T press where the pins are 0.75 dia. This weekend I was trying to bend a 3/16 thick plate about 10 inches long. With a lot of effort (and using ...

ken572

Thanks - I followed the link and then using the Dewalt nomenclature I was able to find a picture of the sanding discs intended for the mandrel shown in your link (and the discs look the same as mine).

I bought a small lot of 2 inch dia sanding discs. Please have a look at the disc in the link. I have never seen a mandrel that would fit this disc. I presume the mandrel consists of a short piece of 3mm/.125 dia rod welded perpendicular to the mandrel shaft. http://i290.photobucket.com/albums/ll272/...

I made a tool like the one in the link. I allow the tailstock to slide.

Steamin10:
Thanks for the reply. I agree that a lost wax part would be best but I do not know where I would go to have a part made. That's why I am thinking of two sand castings welded together. The pattern is made from MDF with a skim coat of body filler.

Greetings all. I tend to lurk on this board and rarely post. I am interested in making a custom 2-barrel carburetor adapter. This will go onto my '61 Falcon w/ the 6 cyl where the intake manifold (log) is cast integral to the head. My adapter will take a cross-car slot and turn it into a fore/aft sl...

A real late entry to this thread - even if you ended up with reasonable stiffness, mass is your friend with respect to machine stability (ability to dampen out cutter vibrations, etc)..

mechanicalmagicstated: "I have an old solar powered auto darkening helmet. Even though it seemed to darken correctly, it was not quite right. I was told there are sometimes batteries buried inside, no way to replace them. It's in the trash as we speak, not worth the chance, whatever it might be...