calteg said:
In reply to AWSX1686 (Forum Supporter) :
1) Buy the mold (I used Slater's stone, which supplies the Atlas stones for World's Strongest Man competition)
2) Set up (gorilla tape to join the two hemispheres, then your favorite silicone spray on the inside to act as a release agent). Probably want to set the entire thing on an old tire as well
3) Mix and pour concrete. I pour the mix in slightly dry, then add water inside the mold until the mixture is just very slightly soupy
4) Wait. How long varies depending on what type of concrete you used, climate, size of the stones, etc. For these 21" molds I give 'em 4 days
5) Tap the molds off with a hammer and try not to crush yourself moving them
The larger molds are pretty pricey, but if you just count materials, the stones in the photo are $14 each, and that cost will continue to drop the more I make.
This video covers it pretty well: https://www.youtube.com/watch?v=90FCioJtpZg
Have you ever tried making one out of aircrete? It is concrete with a foam (air bubbles) added in to reduce the weight.
https://www.youtube.com/watch?v=zTvy5Ut8eps
In reply to Scott_H :
Some folks plop in smaller diameter foam spheres into the center in order to achieve weight reduction. Weight and structural rigidity were two of my main reasons for doing this in the first place, if I can move it easily, someone else can too. Moving them really sucks, but I only have to do it once and with any luck these will outlast me.
In reply to calteg :
Very cool! Thanks for sharing!
100' hose was a bit unwieldy without something to keep it in place.
Enter spare BMW wheel:
Crackers said:
In reply to malibuguy :
How well does 3.5" tuck up there? Any video of it running?
tucks very nice he wanted a more "fitted" exhaust then the tradional straight as possible. Ive run 4" with no problems as well just cannot be lowered alot. The only "forced" low spots are the first half next to the transmission as well the floor keeps you from going any higher and then at the rear subframe. Since that is along the axle line its pretty rare to tap it there. One could notch the subframe or just use oval tubing
Cool! That's the most tucked I've seen an SC300. I'm pretty close to putting exhaust under my wagon, and this actually helps a lot.
I have a self imposed OCD task to clean / organize my shop.
At one point I destroyed / removed a work bench I have had for 20+ years.
Today I took a small bench I made years ago, cut the legs off, took the top and put on the bottom, added rollers I found while cleaning, added a new layer of 3/4 ply, 2 by 4 foot, added some linoleum tiles and framing.
I now have a "new" rolling work bench. It was too humid to paint the framing black but soon.
This used to be the top, I painted it a few weeks ago while cleaning, but decided to move it to the bottom to mount the rollers with and get a new bench top.
The floor tiles may or may not hold up, but the make a nice top to lay tools on. I hope they clean up easy.
This is stupidly simple but I love how it's working.
Bathroom door wouldn't stay full open _ there's a bathtub against the moulding on the right. With every bump it would rebound off the hinge stop or tub and swing into the walk path driving my wife to fits. Thought about a spring opener type hinge but they would tend to overpower the door and crash it hard into the tub.
Enter the 18th century door opener! A cup hook, a piece of paracord, and a weight made from 1" square stock and press in plastic end caps filled with 1/4" nuts. Works perfectly. Holds door open solidly but easy to close, opens softly when released.
I think I saw this touring Monticello in high school and thought it was just clever as hell.
A quicky little guard out of some scrap 16ga to break in a new grinder at work.
ultraclyde (Forum Supporter) said:
This is stupidly simple but I love how it's working.
Bathroom door wouldn't stay full open _ there's a bathtub against the moulding on the right. With every bump it would rebound off the hinge stop or tub and swing into the walk path driving my wife to fits. Thought about a spring opener type hinge but they would tend to overpower the door and crash it hard into the tub.
Enter the 18th century door opener! A cup hook, a piece of paracord, and a weight made from 1" square stock and press in plastic end caps filled with 1/4" nuts. Works perfectly. Holds door open solidly but easy to close, opens softly when released.
I think I saw this touring Monticello in high school and thought it was just clever as hell.
Your solution is much cooler, but a trick an old guy taught me it take the hinge pin out, bend it by laying it flat on the ground and tapping with a hammer, put it back in and the door stays put
Custom exhaust on a 62 Corvette this week
Made in grade 8 metal work class 48 years ago still in use, could use a restoration 
My first silk screen try!
There is a learning curve with this but I'm happy with my start.
Repurposed a side box from a Harbor Freight rolling stand to hold my air tools and tire gauge.
Built a couple of brackets from left over aluminum angle and a couple of pieces of steel u-channel from an old big screen I parted out.
Now they hang nicely so I can reach them and I know if one isn't put away. I do need to move the duplicates along though as having two air hammers and 3/8 air ratchets is a bit much.
In reply to Stefan (Forum
My grandaughter and I built her a bookshelf Black Walnut with a live edge on the sides and quilted figure on the top 
solfly
HalfDork
6/30/20 8:17 a.m.
Not the best picture but I made a car seat anchor point for my truck. 1x2" box tubing 3/16" wall. Attaches to the rear seat belt mounting locations and has a racing harness anchor eyelet in the middle.
I made this solid tool post riser block for my lathe. It replaces the compound but can easily be swapped back and forth. The block is the same height as the compound so the tool heights stay the same.
In true GRM fashion I started with a 35 pound burn out from the scrap yard. The finished block weighs 16 pounds.
I've been using the RS-3 Brake "Ducts" on my GTI for about a year. I've never been super happy with them because they have a large notch in the middle that I don't need. A couple months ago I was adjusting the FSB and managed to brake a big chunk out of one of them. I thought I'd order another pair but they are around $50 each. Last night I decided to try my hand at metal forming. I have a large sheet of .055" aluminum left over from a project about 20 years ago. I cut a piece the size of the original duct face. Then I rolled the top and bottom edged over a piece of pipe in my vise. I was trying to figure out how to form the end. I kept thinking I needed a ball roughly 2" in diameter. Oh yeah. I have a trailer hitch. I put the receiver end in the vise and used it as an anvil. My brother suggested tempering the end I was trying to form and that made it a lot easier.
I'm going to mount these to the original ducts with button head screws on the face and fender washers and nuts on the back side.
Jerry
UberDork
7/2/20 6:46 p.m.
SWMBO and I made our jawa costumes for the 501st Legion and Rebel Legion. I also made a Gonk droid, he has a Stanley car jump pack inside and a 5 port USB hub to charge multiple cell phones at events.
More adventures in reupholstery!
Before:
After:
I bought a half hide of leather, and replaced the foam too. They came out nice, but I'm glad I don't do this for a living.
Nothing too wild recently. A blown Pontiac G8 got 3" duals this week. Did in 409 so no pretty TIG action this time.
Went with my gut on this one with 2 different Hpipes and staggered Helmholtz resonators (in the back you really cannot see) and it sounds fantastic.
Bought a new printer and tried my hand at printable vinyl. I think the first try came out well.
Built a reclaimed wood table for a buddy of mine. Half has one coat of finish when this picture was taken.
I recently repurposed an old Craftsman toolbox for a BBQ station / island. Came out neat.
In the past 6 months I've also tore out our front deck and built a nice upgrade, built a dine in bench around the kitchen table, overhauled a shed, bought a cheap project beater (anybody want a 93 Subaru Legacy???) And sold two other project cars.
Our front deck is pretty sweet. I'm rather fond of it
