eseemann

My wife is a quilter and she said your dry layout is just like when you layout the quilt block so you don't sew it backward.

Good Morning My Good Folks,  

I have been working on a version of the Diresta anvil stand so I would have an anvil stand that I can have retractable rollers. If you want to see that example check Youtube. I think in the end JCL has the most reliable solution since it is a fixed set of wheels.  I am using a car jack to lower the castors but I do not have the right castors for the load. 

Good luck, have a good holiday season and be well.  

A Grinder and Some Paint will make a Welder what he Ain't

On 5/9/2021 at 8:30 PM, HondoWalker said:

Your welds are far better than mine.

 

I loved Junkyard Wars and the Brit version ScrapHeap 

Frazer, pack a lunch and enjoy. 

I do agree that Ray doing all the mentoring is really cool. 

Please keep that thought to your self! 

Good Morning All,

Anyone that has watched BattleBots will know weapons like the 60+ pound S7 tool steel blade of tombstone, shown here, makes a single 250 pound robot in to many small parts without too much trouble. 

The 2019 and 2020 seasons have soon the wide adoption of AR400 and AR500 steel for armor and weapons. This AR400 and AR500 armor has caused S7 tool steel spinning weapons to crack and shatter. Now people are making spinning weapons like the type shown in the photo out of AR400 and AR500. Anyone that wants to watch some physics in action should look at the BB 2020 fights on Youtube or Discovery+. The results of these impacts are leaving half inch deep cuts in the 2 inch thick ballistic glass around the battle box. 

I thought this would be a good conversation topic for a Friday. 

I hope all is well and everyone is safe. 

Ernest

Please remember Team Lift!

Looks great!

Yup, that is what I thought as well but is shows (at least I think is shows) what just a few points of carbon will do. 

Good Afternoon all, 

I was watching this YouTube video on hardfacing a run of the mill (there is a pun in there somewhere) chipping hammer. You can find the video by putting 0QVCs4T7uCg in the search box. I liked this bit since it really showed a good side by side of what the person making the video thinks is 1045 or so vs some square tube stock. 

I still think someone needs to make Sky Captain and the World of Tomorrow style movie with a secondary character named Bursty Sparks. I am thinking a Jimmy Olson (pre 1980s) archetype.   

And Deimos and his face for the win! 

5 hours ago, Deimos said:

Missed my face by about 10 cm

There is a term the people that investigate bird strikes on air craft use to describe what is left of the bird after hitting an air craft, that term is Snarge.

Lord looks after fools, small children and in this case Deimos!

6 hours ago, Glenn said:

Oxygen cylinders full pressure is typically about 2,000 psi and can go as high as 3,000 psi.  Always chain them in a vertical position so they can not fall over, possibly shear the valve, releasing that pressure.

I have seen the Mythbuster ep where they knock the valve off a cylinder and it went though a hollow concrete block wall like butter. Yep, no argument here.

6 hours ago, ThomasPowers said:

I have to say that that was actually a relatively MINOR tank failure, Structure still standing, most of the stuff that was "blown out" can be repaired, he didn't end up in the hospital.

I did not see some chunk of steel looking like a prop from a Clive Barker movie embedded in a wall, could have been MUCH worse. I would think that micro fractures could have made that tank in small very fast fragments   

I have to wonder about all the people on Youtube using old and in some cases rusty propane tanks for air tanks. 

I told my wife last year when she wanted to buy a cabinet from the Re-Store and have me put a book shelf on it that I don't think they built this thing with 500lbs of books on it. 

I don't think that propane tanks were built to handle compressed air that is always bringing water with it. 

I also think that if a propane tank is end of life that is not a great time to use it for compressed air. 

This does not happen very often but when it does it is very bad. This is also why I am not keen on getting a used compressor from Craigslist. 

Pnut, you and I are of one mind here. I also keep in mind how P.O'd my wife would be if I gave my self cancer when I could have avoided it.

I have a "TuffShed" building that has steel floor joist 12 inches on center with a plywood floor so I know I can do a power hammer but I wonder if I can do a Da Vinci cam hammer or a treadle hammer?

Anyone have any idea how these work on a plywood floor? 

Agree, and if nothing else we learned from the Rob Zombie remake of Nightmare on Elm Street that there is only one Fred Kruger. 

A brand new account called "Mayor of MeltTown" makes me think this might be a troll. 

I could be someone that wants to cosplay Freddy Kruger all day everyday, if so he is on the right track. 

I wonder if this is a Troll.

Mr. Thomas, 

That is sort of like in the early days of AOL and such when it was popular to tell someone to use the secret key combo Alt F4 to get something. They would use it and close AOL. 

You ask a very valid question that I can only answer with a slack jawed look. 
I got no idea but I do know (look at me thinking I know something, I should say I kinda think) that any addition or subtraction of something from another thing will change the properties of the combined whole.  Sort of like what I learned from from the periodic videos channel on  Youtube. If you try and mold plutonium in a press the plutonium flakes off. But if you alloy plutonium with 2% (or so) of gallium you don't have that problem. 2%, that is almost nothing except if you think about what 1.8% carbon vs 2.8 carbon does to iron, one makes a blade and the other makes a frying pan. 

My problem is I know Kast-o-lite had an r-value but I had no idea how much. I got what is in reality "Brand X"  Cast Master Propane Furnace that has about an inch of bare Kaowool on it. As people have said in other posts talking about this type of  Propane Furnace there is very little air space between the crucible and Kaowool. That suggested to me I was not going to be able to add Kast-o-lite or Mizzou (what I have on hand) on top of the wool. 
That makes me need to know what an inch of Kast-o-lite will get me vs the wool. Given every photo or video showing this thing post first use looks like the wool wilted (for lack of a better term) at least 1/4". 

That was the reason I when head first down this rabbit hole. 

LOL

Good Morning All, 

I hope all is safe and healthy for you and yours. 

Frosty made a comment in a post about Castable Refractory that sent me down this rabbit hole. Here are some notes and links that you folks might like.

Mizzou has been in use in propane forges since I don't know when and lives up to it's rep and then some. It just has about the same insulating properties as the same thickness of limestone. One foot thickness = R1. Th 

The R-Value is an imperial system unit of measurement (ft^2·°F·h/BTU) 

Mizzou Castable Refractory 7.4 btu-in/hr-F-ft^2 at 2000 at degrees 

Limestone 8.74 btu-in/hr-F-ft^2

Kast-O-lite 26 LI Insulating Castable Refractory: 4.0 btu-in/hr-F-ft^2 at 2000 degrees

Kast-O-lite 30 LI Insulating Castable Refractory:4.54 btu-in/hr-F-ft^2 at 2000 degrees

IFB 23 2 Btu-in/ft², hr, °F at 2000 degrees

Kaowool 2.98 BTU-in/hr-ft²-°F at 1800 degrees

https://thermtest.com/materials-database

http://www.matweb.com/Search/MaterialGroupSearch.aspx?GroupID=11

http://www.matweb.com/search/datasheet_print.aspx?matguid=cb830e74bc69422aa560a7b57494955a

https://converter.eu/thermal_conductivity/#1.26_Watt/Meter-K_in_BTU/Hour-Foot-°F

https://www.engineeringtoolbox.com/thermal-conductance-conversion-d_1334.html

https://www.bnzmaterials.com/miscellaneous-materials/castables/

https://www.bnzmaterials.com/insulating-firebrick/ifb-3200/

https://www.naturalstoneinstitute.org/stoneprofessionals/technical-bulletins/rvalue/

k-Value (Thermal Conductivity) (W/mK)

R-Value Equivalent (R)3 (Hr • ft2 • ºF / Btu)

On 2/4/2020 at 6:25 PM, Frosty said:

Mizzou has been in use in propane forges since I don't know when and lives up to it's rep and then some. It just has about the same insulating properties as the same thickness of limestone. One foot thickness = R1.

Well Frosty's comment sent me on a hunt that lead me to this site https://www.naturalstoneinstitute.org/stoneprofessionals/technical-bulletins/rvalue/ for the R-value of Limestone. I am going to make a post in resources with more information but here is something I found out. Please note that this is comparing Apples to IPhones in a way because the numbers I have for Mizzou are at 2000 degrees and I don't have that level of info on Limestone. 

The R-Value is an imperial system unit of measurement (ft^2·°F·h/BTU) 

Mizzou Castable Refractory 7.4 btu-in/hr-F-ft^2 at 2000 at degrees 
Limestone 8.74 btu-in/hr-F-ft^2

Kast-O-lite 26 LI Insulating Castable Refractory: 4.0 btu-in/hr-F-ft^2 at 2000 degrees
Kast-O-lite 30 LI Insulating Castable Refractory:4.54 btu-in/hr-F-ft^2 at 2000 degrees
IFB 23 2 Btu-in/ft², hr, °F at 2000 degrees
Kaowool 2.98 BTU-in/hr-ft²-°F at 1800 degrees