I should point out that the plasma cutting I did in this video is 80% of the plasmaing I've ever done, so I'm no expert! Also yes, I will be replacing the plastic hoses with metal ones
Maybe add a vortex slag droplet catcher? I hear there was a video out there where a woodworking one was made . . . Although since metal is heavy it probably only needs a simple single stage.
This is the first time I've seen some real innovation on a CNC machine. Don't get me wrong, traditional CNCs are great, but mostly for production work. Draw once, produce hundreds, thousands, millions of times. For a hobby shop, where you mostly make things once, the trace functionality of this machine is freaking awesome.
better yet, I've seen these cutters that can follow a track drawn on the workpiece...maybe on a water jet, but on plasma, it could follow the track, "cold", record the travel, then cut...
Listening to the downdraft table discussion got me thinking: what if you added a "fume hood" over the top (maybe with a fan similar to the exhaust fan?) that would bring in outside air while the downdraft table was on, that way the "negative pressure" outside air would be pulled in right over the downdraft table, instead of through doors and windows throughout the garage?
For as much as he’s probably going to use the cutter it wouldn’t be worth the time. Also the negative pressure would be inside the building by the downdraft table hence why the higher pressure of the ambient air would go in.
13:23 a feature that i once have seen on a cutting table, is to place the baffles diagonally. That way when you make a straight cut in the width direction, the chance for mangle up a entire baffle is much lower. Depending on the amount of usage, it can be helpfull to make the baffles with fixed pins that fits in a hole on the bottom, that way baffles can be replaced very easy if they are mangled up after many use. Another suggestion is to use at the hose at the floor a T on it's side or a square box, with the hose connected on the side, that way small pieces of metal get trapped there, and will not be sucked in the fan blower. Sort like a wood dust extraction system works.
I started with this channel because I love woodworking and your funny reviews. Then I found about your "second" channel AW and got completely hooked. I just finished watching how a subscriber brought you shifting stick (among other stuff) for Trabant from EU carrying it on a plane as a walking stick - dedication 🤣 You are a diamond in rough and it is just question of time and mostly for shitty RU-vid algorithm to push you over one million subscribers. You most definitely deserve it. Fantastic stuff, keep it up! Greetings and much love from Croatia 😊
I wish I had what half of this guy has. I would kill to have a small shed to just tinker around in am build stuff. I would love to have a lada with a half running engine. But most importantly, I would love a nice haircut.
DI SI BRATEEE😂 Edit: sori sad vidim da si cura oprosti hahahhaha Edit 2: aaa ipak nisi, oprosti stvarno mislio sam da je Andrea zensko ime... Doduse u Italiji znam da je musko... A desi se sta ces
"Second" channel. LOL. It's great to see this channel already has about half as many subscribers as Aging Wheels. If it keeps this up then AW will actually become his second channel.
When I was in high school shop class, we had a TorchMate plasma table, I think the thing was in 5 digits and needed two control boxes, a special torch, and expensive CNC software to work. I'm fairly certain it also ran on 440. How far technology has come!
I have three phase 400V at home, seriously this house was build in 1971 and this is the original feed. Why the US still runs on 120/240 is a mystery to me.
@@patrickd9551 Because otherwise we will have to run 120/240 AND whatever new system they come up with? After all almost every home is already 120/240.
@@patrickd9551 Alot of european 120v infrastructure was destroyed in ww2 and when they rebuilt, they upgraded. Obviously that never happened in America.
I don't know what any of that means, but I had to opportunity to use (and clean) a plasma cutter in my senior year of HS. Inch thick baked on mate of steel under two inches of partially baked on steel dust. But the many times I used it were fun.
I wish I owned a company that made stuff so I could send the device to you for free. Your "not sponsored but sent to me" reviews are way more convincing than other people's paid sponsorships.
My wager is that the plastic housing for those safety feature contact points just gave way due to heat deformation over time. Failing in the middle of a cut would be inevitable under that premise. LOVE your content, btw! 😁😂
The other reason I could see it failing during a cut would be some issue with insufficient slack in those cords being tugged around somewhere upstream as the head is moving.
Did you seriously just try to fix a plasma cutter head with HOT GLUE!?! I can't decide if you were trolling us or if you genuinely said: "You know what, let's try it! What's the worst that could happen!"
Due the passing air at high speed, the torch doesn't get that hot at all where the hot glue was added. Also the blue insulation on those thin wires have not much higher temperature rating as the hotglue itself. it depends on the cutter itself, some keep air blowing for a short period of time after you released the button, to cool down the brass cup.
I am massively impressed and slightly envious. Also consider googly eyes for the arm, for one glorious moment I thought you'd done this, but it was my pareidolia seeing them in the bolts and washers instead
For the downdraft: you could also provide the fan with fresh air from the outside. so like, outside air is fed above the table, and then fumed bad air is sucked out the bottom. Essentially, that sucking fan is going to pull outside air into your shop, *and there is no way around it* (if it didn't pull outside air, you'd have a warehouse at less than atmospheric pressure). What I'm suggesting is this: instead of the sucking fan bringing outside air in from "wherever," give it a suck or origin. You can put like a door or something over the input hole so you don't lose all the conditioned air.
I know absolutely squat about plasma machines and anything to do with metal but I had to watch as this small cnc type machine is amazing and eventually I’d like to learn how to weld, the plasma cutter is amazing for perfect cuts, etc. can’t wait for more shop builds 🤞🏽
Nice build, man. Glad you are taking the fumes seriously. That machine is pretty neat, too. (Although with an MSRP of $2500 it better be) Noticed what I think is a Wyse camera on your shop wall. If it is and you haven't seen the security vulnerability for those yet, check it out.
@@GrayRaceCat Generally if I post links my comments get removed. Google "wyze camera vulnerability" and it should point toward articles around spring 2022 about the issue.
I really hope that "just dealing with the fumes in the shop" meant you were wearing an appropriate respirator, like a half mask N99 or something. Edit: oh good! Just got to the point where you said you are. Nice! I also really recommend wearing both gloves when welding and cutting. I know it makes you less dexterous, but the amount of UV light coming off the torch and welder is no joke in terms of long term skin cancer avoidance. I know this can sound like internet comment safety expert bullshit, but I'm literally a shop safety expert. Teaching people (adults and children) to safely use tools of all kinds was my job for nearly 8 years before I switched to teaching math. This plasma cutter is cool! I love the mechanism! It's interesting to see the alternative to a gantry system, and the ability to use it for coordinate measuring is seriously awesome.
Just chiming in, when welding, even tacking, at minimum wear long sleeves and gloves; once I had what I considered a short session, but the next day my forearms were 'sunburned'; as mentioned above, the arc creates nasty radiation, both visible and invisible.
Hi, nice to see you again on RU-vid, i just saw that you removed all your video's,you had some great content there. i discovered your channel arround the time that you did your last video and i was bingewatching your entire channel back then. Grtz
Quick point - It'd be worth having something to suspend the cable for the plasma cutter - It looks like it'd wear through the cable after used for a long enough period of time.
I don't know a thing about downdraft tables except that they exhaust air, but I think you ought to put in a mesh screen over the funnel to sift out particles that might destroy the blower over time. Also, you could benefit from using quick-release pins for the support legs so they don't fall away at the right place but at the wrong time. Maybe use something similar to the type of pins that hold snowblower wheels on the axle.
A downdraft is the most important addition to a plasma table; my shop was FILTHY after a couple years of running without one, and the dust is ferrous so it is magnetically attracted to motors, computers and settle in and everywhere. In my experience the sparks are out after about 4' so you may want to make a 'trap' by bending your hose strongly upwards so heavier particles can settle in the 'dip', similar to a drip bend in exterior electrical lines. All in all, a nice project. You should just draw in an external program for an accurate DXF, and then set your zero reference to a known position on the stock, say lower LH. Also put weights on your stock to prevent movement, but make sure of torch clearance; for small parts, overlay the corners with larger sheets that you CAN put weights on, to pin down the corners.
I wonder if you really wanted to save on conditioned air, you could have a loop-back system where it essentially makes an air curtain and only flows outside air between the two pipes.
@@UnderDunnOfficial except more exposure to the plasma versus the vertical bars. Maybe this was already suggested, but having a few of the Harbor Freight fiberglass welding blankets on hand to cover the unused portion of the table would also improve airflow on the in-use area.
Next time you have a 48" long bend to make -> instead of cutting that piece completely off. just cut the majority of the way through the part, but leave a few spots where it's not cut (~1" long every 3-4" spaced apart) and then you can just simply fold along that line by hand.
Nice! You mentioned pulling conditioned air out so why not make another vent with a hood or just a directed tube over the table to supply outside air in when you are using the table ?
the relative chaos of the cnc tab cutting juxtaposed to the calmness of the spot welder that close in the video gave me a real good chuckle for some reason. Love you're work as always!
I love the way you do a "80's montage" while still being totally honest about the issues/problems with your work. 11/10 for realism, 10/10 for being you! Keep being you!!
i dont normally comment on these videos. but i have to say that you are one of the more entertaining content producers. i also like the fact that, "mistakes were made and here they are" aspect. and as one last point, the fact that it looks like you actually use your shop is refreshing.
That's pretty slick, a lot more convenient than the big gantry style ones. If I ever get one it would probably be this style. Does it make sense to make a torch shield or is that only for water table usage?
Earlier today I thought to myself, “I haven’t seen an Under Dunn video in a bit. Wonder when he’ll get around to another video.” I then saw this video tonight. Thank you for reading my mind.
I am sure you had a reason, but I can't figure it out. Why didn't you do fume extraction from the top at or near the cutter head? Seems like that would have been the least conditioned air removal?
I'm excited to see you get an Arcdroid, Robert! I was disappointed when a certain Fabrication YT channel got one and barely used it thereafter :/ With your background and love of CNC ...everything, I'm sure it'll really help your workflow and capabilities!
"The more caulk the better..." I'd say "that's what she said," but I'm above saying such things... out loud. Also I could Swear Adam Savage in a recent video said he'd love to have something like this but they were too big... maybe I'm mistaken though.
Nice tip. There is a guy on YT that shows how to 'bend' sheet metal by scribing (deeply) and then bending it on the scribe. Question: Does the Arcdroid create G code from the stylus? Almost all CNC I do is directly in G code. G00, G01, G02 and G03 are all it takes for 99%. Very nice, great video!
From now on, I will be scoring each vlog using 2022, 24 metric prefix symbols: low to high - q, r, y, z, a, f, p, n, μ, m, c, d, da, h, k, M, G, T, P, E, Z, Y, R, Q. Score of Y.
In my world, plasma cutter wins over sheet metal shear every.....single.....time! For no particular technical reason. Thank you for the information and technique, and foible sharing!
It's crazy that I wait until I'm alone in the middle of the night to watch your videos so no one can fking bother me. Guys like you and Peter Brown are treats to watch.
Would love the Arcdroid, looked up the Australian pricing. Near 5 K, wow. I guess I will keep breathing in the gas and finding templates to cut around with my plasma cutter. My freehand cutting without guides or templates sucks :(
Hey.. um.. Dunn... ? Forgive me, I've been watching your videos for a while now but don't ever recall learning your actual name.... If you really want to mitigate loss of conditioned air and want another project for your channel, check out HRV / ERV s. Heat/Energy Recovery Ventilators are heat exchangers that will do a pretty good job at transferring the heat(hrv) / heat&moisture(erv) from the air expelled from conditioned space, to air that's coming in from the environment. It works both ways as well, so it's great for both summer & winter. Alternatively you could just make a second hole in your wall and a sort of hood for the plasma cutter table that you can plop over it so you are just sucking the air in from the outside to be a part of your plasma cutter ventilation loop.
You've got to be my favorite RU-vidr.. the content you cover is interesting to me but even if it wasn't, I would still watch because you have a hilarious personality and sense of humor. Keep 'em coming!
Besides that issue you had, how is the Harbor Freight plasma cutter? I was looking at one but decided to "buy once, cry once" and got a Hypertherm 45XP.
you should make an Aging Wheels or Under Dunn "music intro" from the sounds your machines making when you are (dis)assembling and manufacturing parts :D
some pretty decent editing skills you got there! (a sentence I thought would never come out of my keyboard) ;) Awesome clip. Love your sense of humor. Great work!
I wish I lived by you so I could always hang out there, even after you left. You have a lot of tools I wish I had. I really love my Thermal Dynamics Cutmaster... 50? I forget the model number.
I just got that same husky table from Home Depot! XD. I was looking for a table that could hold my 3 monitor arm without collapsing under it's weight, and was getting frustrated because apparently table now means the cheapest tatt that you can rest a laptop on, vs this is evidently now called a work bench.
Best way to not remove all your conditioned shop air as exhaust is set up a make up air. Same principle I have with my laser. Think of a restaurant kitchen exhaust hood, lots of air out but you feed it with controlled air in. Get you a cheap fan draw outside air in blowing at your table. Turn the exhaust and make up air fan on at the same time and you save lots of precious conditioned air. I was sick of my laser exhaust pulling out all my conditioned air in the Texas summer. Takes way to long to cool the space back down. This will create a mini hot or cold spot around the plasma or laser
Brother, I appreciate you and your incredible personality. I seriously envy your garage space and the fun projects you get to take on. Please for the love of god put some eye protection on. I have the video paused not even two minutes in just to make this point.
the led lights are not rectified. you can test if an led light is rectified if you put your phone right up to it (and sometimes twisting). the rolling shutter will pick it up. antibanding settings on cameras can typically compensate. i hate unrectified led lights. you can can see ones with low persistent phosphors flicker if you move your eyes back and forth fast enough. but it kills the longevity of leds and annoys me.
Re the bend too long for your bender. INsted of cutting the piece off, you could have stitch cut, and the would have weakened the bend line enough you could bend it by hand.
In the future when you need to bend larger material don't cut all the way across, leave them 1 inch tabs throughout the bend area. Or you can make a relief cut with a grinder on the inside of the bend
no you are baffeling the fumes you are trying to remove. have it as open as possible use a thin piece of metal to cover the part of the table you arent using to concentrate the air if the stock you are using doesn't cover the whole thing.
