Recent content by griffengm

IIRC, threre is at least one brand that will do what you want. I searched for at least a year to find one on the used market but that was maybe eight years ago. I believe it would do it in one direction only so check the specs pages closely. Griffy

CEV, How many pieces and to what specs? "DWV" tells me this is not precision work and if the quantity is low, sheet rolled and welded into a tube might work. Griffy

Try a search for "knurled washers". Carr Lane has a decent illustration of the principle. Griffy

Thanks so much for the help. I see where I was messing up. Griffy

I am attempting to create a drawing(ipt) for a tubular grab handle and have attached a file to show the form as far as I've taken it. I having trouble lofting the transition from full round to the flattened section and no one in my work group (maybe that's why it ended up on my task list)seems...

Do you have a preference for supplier location, east or west side of the pond? Griffy

One other method depending on materials and permissible features might be to swage the form. Griffy

Treefarmer, Try a google search for "post peeler". I saw several commercially built unit and at least one set of plans. Griffy

While a 45 may be appropriate, I think that a look at the rake angle data for various materials for cutting tools might improve your chances of being close on the first try. See Machinery's Handbook. Griffy

Stinsondawg, Check out the section on rivets in Machinery's Handbook. Several formulas and tables dealing with the information you are seeking. Griffy

If you check out standard EM note the effective thickness compared to the metal thickness (stock gauge). Flattened 3/4 x 10 EM may be .070" thick while standard 3/4 x 10 is listed at .282" thick. The apparent opening size changes depending on view which in turn affects size and presentation...

We've used that method for years but this project needs a detailed model for fits and clearances. Continual space and weight reduction efforts are affecting all kinds of materials today. Griffy

Hoping to locate an Inventor IPT file for steel expanded metal in the regular form as opposed to flattened. More specifically 3/4" x #10 if available but any help appreciated. Griffy

Time to consider rotational molding? Griffy

On your coiler there should be a device we called a "dancer arm". The arm is linked to a potentiometer governing the speed of the uptake and thereby controlling the tension on the extrusion. As the tension increases a predetermined loop would pull up and raises the arm which in turn slows the...