Robert Mitchell
@pump_kicker
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Marine engineer bringing American shipbuilding back at @13th_hour__ . Ultra runner, always pushing the limits. ⚓🏃♂️
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Joined April 2024
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V1 of the 3D metal printer is working, still working out some settings. Once we get it dialed in will release some product builds
@13thhourdefense
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Looking forward to the S5 class later today! Already have the "toy" version complete so spending this week focused on two objectives.
1. updating/improving 3d slicer profile & raising printer constancy
2. design and parts list for V2 which should be a 10x larger print volume
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Week 4 of S5 update is going to be late but some big changes are coming
1. New welder & process change
2. 100X larger 3D printer is coming together (pic below shows comparison)
Hoping to have all parts here by Wednesday and fully functional printer by Friday
cc
@_buildspace
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Gantry is coming along, going to be making a two custom plates out of Al to finish up the Y axis. On to the Z axis next
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Lab
#2
starting! looking forward to seeing the 15 "TOY's" that the buildspace team picked
@_buildspace
@_nightsweekends
@FarzaTV
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Few updates on where the 3d Printer is at
1. X Axis is complete and will release a video later today
2. Y & Z axis are waiting on a part order
3. Printer will be using Alum. MIG and we are building a water cooled bed
4.28 days till S5 demo day, we will have it done for Sat.
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New welder is assembled and ready to make some sparks 🔥
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Looking forward to the S5 class later today! Already have the "toy" version complete so spending this week focused on two objectives.
1. updating/improving 3d slicer profile & raising printer constancy
2. design and parts list for V2 which should be a 10x larger print volume
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Finished up Secrets of Sand Hill Road by
@skupor
this weekend. Highly recommend the book as Scott does a great job of mixing insight & story telling of what its really like on Sand Hill road.
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It’s been a minute since I have needed this book but was good to check my calcs and methods. Also needed a rest from coding
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The look on the group of Boomers faces at the coffee shop this morning after they overheard of our discussion of humanoids building ships 🤖🛳️
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When you hear the incumbent 🦕 has banned the use of Grok, ChatGPT, Claude & all others you ⬇️
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Starting to get some early shapes down, this cylinder is roughly 3” tall. Need to switch from flux core to MIG soon to get cleaner products
@13thhourdefense
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note to self: if you mod your Ender 3 to make metal 3D parts just order a new one, it wont go back together & work well 🤦♂️
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Hopefully that is the last package of parts needed to complete the printer. Thanks
@JeffBezos
&
@amazon
for quick shipping!
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@andrewmccalip
Are you thinking about running a set of spurs on it? I will a college friend if his father’s business might be able to help, it’s a propeller shop
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Does anyone have a recommendations on good resources/ books on Aluminum annealing? planning going down the 🐇🕳️ later today
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@cwamidon
Def agree on the fact that US shipyards are behind on developing/ implementing the newest tech trends. For DOD shipyards they have some head winds to overcome with these in the form of unions and US Navy acceptance.
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@Fennex628
@_nightsweekends
@_buildspace
Yes it def. would, big reason we lost MFG was high labor cost in the USA
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@CooperZurad
@_buildspace
When you say control side do you mean control of travel speed?
I would assume as thickness of the material increases travel speed would need to be reduced but could be wrong here
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Just finished “Paper belt on fire” by
@William_Blake
amazing book about going against the establishment
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@sailbikewrite
Great write up! couple items that i would add
1. OSHA regulations in the USA are a cost driver that is often ignored (not saying that they are a bad thing)
2. I believe a true cost metric that highlights what the price per overall TEU capacity comparing USA vs China built
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@belmiro_ngola
@_nightsweekends
@_buildspace
Yes pretty similar, uses G-Code like a cnc or 3d printer
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@CooperZurad
@_buildspace
Got ya! Def will be looking more into here soon, appreciate the info!
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@JohnUBalis
@13thhourdefense
Thats a great question, it really will end up being a factor of layer height used similar to a plastic printer.
Could also do post processing machining to cut back to get tight tolerances
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@CooperZurad
@_buildspace
Absolutely 👍, was looking at EDM as a process to remove from base plate in the future
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@KennethCassel
pretty clever, weak point probably is door opener but he probably could a set of reduction gears on it and move a lot of weight & slow it down a little
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@Fennex628
biggest issue to come through to get it to start was coming up with away to turn the welder on and off. ended up stealing the power from the extruder fan and hooking to an automotive relay. Than it was just a simple gcode to turn it on and off.
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@CooperZurad
@_buildspace
material hardness play much of a role at all?
what is the limiting factor(s) that sets the ceiling of 32mm on the wire tool currently?
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@andrewmccalip
Not to boat scale yet, using WAAM as the build method on a gantry style printer
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@this_is_surabhi
@_nightsweekends
@_buildspace
awesome looks great, what material are you going with?
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Anyone else get their email from YC on S24 late application?
got my NO 20 mins ago
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@andrewmccalip
Okay nice yeah water tight seals are always an issue, it’s amazing how much damage a piece of monofilament fishing line will do
Are you planning on running a set of spurs?
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@benkohlmann
Largest advantage of 3d printing is probably vast reduction in part count shown here by spacex. Design/ production feedback loop being shortened with 3d printing is a second big one.
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@CooperZurad
100% true
Saying 3d printing is the future of every metal part is like saying you have a 10 trillion dollar market opportunity...
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@Shrutwt
@_buildspace
@_nightsweekends
@FarzaTV
This would be super helpful for meeting minutes and gathering who said what. I don't know if that is your goal or not
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@iam_hasan_raja
@_nightsweekends
@_buildspace
Using weld build up through MIG welding methods instead of powder bed fusion. Many pros & cons to the approach
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@LakshyaGar33013
@_nightsweekends
@_buildspace
Currently using flux core (FCAW) due to working outdoors currently. will be switching to a solid wire MIG setup, will be much cleaner.
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@CooperZurad
@_buildspace
What is the max material thickness that you can cut today for common metals? Steal, aluminum, stainless?
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@NuzairNuwais
WAAM stands for Wire Arc Additive Manufacturing
Thanks def will be posting more updates here soon
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