Bamaboy13

I guess I'll just fill with perlite

Came across a 4" OD square tube, been wanting to build a rocket stove, so now I'm building 5, 3 brother's, son, & myself. I decided on my design and have most cutting done. I am building a box around the burn- box/chimney with a 1" space. I have 2" refractory ceramic wool. What will it do to the insulating efficiency if I compress it into the 1" space?

Kinda south central, close to Opp

"Over-built" I used heavy wall 2.5" square tube with a 1.5" steel bar plug welded from the pivot forward, same for the double gussets, all with .25" plate gussets wrapping all external joints, all ends capped. Everything welded & ground smooth. I like me some gusset s! I think I have air covered, 5hp 220v 80 gallon tank with auxiliary tanks and a commercial air dryer. Kinda influential in going with pneumatics.

I agree on your point about the anvil, I inadvertently left out the detail of pouring molted lead around the steel rods resulting in a solid mass, kinda like I've read how some anvil stand legs are built with some sawdust/oil in the top to absorb sound?? I will make interchanging dies, I made a permanent 1/8" metel template to mark bolt holes, and I cut two 1-1/2"x6x6 for top/bottom holders, plan to drill/tap 7/16 holes for grade 5 bolts to hold 1/2 plates with my dies atached. Hammer pivot is a 1-1/4" solid steel shaft with flange bearings and I have 2 more bearings for the frame. Once I get to that point I can experiment with the cylinder mounting and strokes. I'll add some pictures soon. I work 12hr nights in industrial maintenance = too much free time, lol. We're changing several 10" stroke cylinders, so I can snag a couple to rebuild!

My OCD kinda forces me to over- build things, taking my time putting a lot of thought into it. But I'm striving for simple. What kind of stroke length is normal? And I was wondering about dies, does the top/bottom need to match in weight, or just in shape? I'm thinking heavier bottom.

Been looking at all the different designs for junkyard power hammers. Then started looking at what I have to work with, in an effort to pinch pennies where I can. I want (started) building a helve/tredel/pneumatic set up. My hammer is mostly finished except for the die holding part. It's 36" from pivot to center of the head mass, have not weighed it yet, but shooting for 50-75#. My idea is to mount a leafspring centered under the pivot and use 2 2-way air cylinders, 1 on each end, to both push and pull at the same time. I really dont think i want to go with a solenoid, but use a 4- way foot control, like a tredel. I have 4" bore cylinders, just have to decide on the stroke I need, with turnbuckle for fine tuning. For my anvil I have a 1/2" wall 12"ID steel pipe 36" tall that weighs over 100#, my plan is to use 5/8x30" rods packed as tight as i can get them as filler, then depending on weight, use what i need for top/bottom to get my ratio right. That steel, my base 1- 1/2"??, and 4140 for dies will be the bulk of my expenses. I was wondering if it would be of any benefit to fill the anvils remaining air space with sand or maybe hydraulic oil?? I'm a big boy, let the constructive criticism fly, lol

NOOB here, I was just wondering if there is any specific place for bartering, or is this not permissible here? Thanks...