Stuff you have made today

[Dr.Al]

Right...I don't mind admitting my mistakes...

My finger is on the positive of the battery....spot the mistake?

View attachment 281482

Htf did I manage that? By getting the polarity marks the wrong way round on the 3D print!

View attachment 281485

Just the diode died d'you reckon?

If it's a simple DC motor speed controller, it probably has a circuit that looks a bit like this (the coil is the motor - image stolen from google image search as I was too lazy to draw it):

The MOSFET has what's known as an "intrinsic body diode", so should look more like this:

As a result of that, you have two diodes in series, both pointing "upwards" (from negative to positive). If you connect the power supply the wrong way round, you effectively short circuit the power supply through those two diodes and one or both devices will go pop (probably at that current an internal bond wire will break and it will have an unconnected pin).

If you're lucky, one or other will have broken and the break will have protected the other one (but it's pot luck which one will go first). If you're unlucky both will have broken. If you're really unlucky, other devices on the board will have gone as well (lots of ICs have parasitic or protection diodes that point "upwards").

 

[slim_boy_fat]

Today I made [well nearly finished] a pair of machine vice 'hold-downs for the pillar drill table [a big thanks to Mike @Wallace ] for the alloy blocks.

Thanks to the Member on here who suggested the pattern, sorry but I've forgotten who it was . They still need a tiny bit of fettling but I've proved they'll do the job - just have to get/make M10 bolts. Don't you hate it when a drill bit grabs and nearly breaks your wrist.....

I want to radius the edges as they're sharp but don't have a suitably profiled milling cutter. I'm thinking I might carefully & gently try a router bit in the mill, but I'm not sure if they'll do alloy...... Answers & the address of a good A & E, please.

 

[Hood]

Handrail hinges fitted today, will let someone else do the polishing

and pic of the aft section hinged open and in the keeper.

The two cap screws below at either side of the stanchion are adjusters to get the rails sitting level when shut, they will be replaced by grub screws but had forgotten to take them so just shoved capscrews in to check all was well.

 

[wyn]

Finished another wall top decoration thingy.

 

[zx9]

I want to radius the edges as they're sharp but don't have a suitably profiled milling cutter. I'm thinking I might carefully & gently try a router bit in the mill, but I'm not sure if they'll do alloy

Router bits will probably 'do' aluminium for a while, lubricate with WD40 and don't complain that they no longer cut wood nicely afterwards.

 

[Maker]

Router bits will probably 'do' aluminium for a while, lubricate with WD40 and don't complain that they no longer cut wood nicely afterwards.

I think I've seen Tom Lipton use a router bit in his mill on steel, aluminium wouldn't be a problem.

 

[zx9]

I think I've seen Tom Lipton use a router bit in his mill on steel, aluminium wouldn't be a problem.

Rather him than me, I can trash end mills quick enough.

 

[northwest]

Needed to make a couple of stools for the range as they have destroyed every type of bar stool we have had, some of em could break a cannon ball! Anyhow these are fast and dirty, fit where they touch tripod style stools. So while I was at it, going like a lunatic I decided to make a stand for my little folder. Naturally I should have thought it through a bit more but you only get to know this towards the end
Chopped a few bits up:



Mostly 30mm 3mm wall box but 40mm for the stand:



They came out well, made three stools:



Naturally, back at base I realised the error, cant get bolts through:



Ahhhh.... But I have a tig welder and some stainless bushes in 10mm:



Powder coat tomorrow.

 

[northwest]

Random pic of my little folder. The workshop is starting to slowly move into the office now too as I couldn't get so much as another screwdriver in the workshop.

 

[MattF]

Random pic of my little folder. The workshop is starting to slowly move into the office now too as I couldn't get so much as another screwdriver in the workshop.

View attachment 281599

That's a thing of beauty.

 

[The_Yellow_Ardvark]

I couldn't get so much as another screwdriver in the workshop.

Bet this will fit.

 

[Kram]

Attempt 2 priming headstock. After lots of prep and some tests, swapped to the 1.0mm tip as this epoxy seems thin (or Im doing it wrong). Got quite a few runs.

To which I put a bit more on and blasted air at it I will sand flat tomorrow and another coat, after some practise on something else..

Then 21.5km run for shopping, fueled by Scotch, fruit pastels and codine. Followed by a recovery steak.

 

[indy4x]

Not today but spread over several days I made a new work bench, this started from an stainless kitchen prep table, all thats left of the original table is the stainless worktop, rest was made to fit.

Legs are 40x40x4mm box

Worktop frame is 50x50x3 angle

Under the stainless top is 4 layers of 12mm ply screwed together







And a new welding table, bought the top, frame is 40x40x4mm box with 40mm high spacers to hold the worktop off the frame and adjustable feet



Whole lot is like nested tables and the little plasma table was bought in, since having the access road tarmaced I've promised the wife I won't do anymore plasma cutting on the access road

 

[Onoff]

Then 21.5km

Nice. What's that about 1.5m?

 

[Tangledfeet]

Not today but spread over several days I made a new work bench, this started from an stainless kitchen prep table, all thats left of the original table is the stainless worktop, rest was made to fit.

Legs are 40x40x4mm box

Worktop frame is 50x50x3 angle

Under the stainless top is 4 layers of 12mm ply screwed together

View attachment 281645

View attachment 281647

View attachment 281648

And a new welding table, bought the top, frame is 40x40x4mm box with 40mm high spacers to hold the worktop off the frame and adjustable feet

View attachment 281649

Whole lot is like nested tables and the little plasma table was bought in, since having the access road tarmaced I've promised the wife I won't do anymore plasma cutting on the access road View attachment 281646

That's one of the tops by 7050ps if I'm not mistaken; I've got one of his folding welding tables. Looks like you've gone for a thicker one - is that 8mm?

I was going to sell it when I got the larger GPPH table several months ago but it so convenient to have yet another work surface to accumulate yet more 'stuff'...

 

[indy4x]

@Tangledfeet it is one of their tops, it's 12mm thick

 

[MysterG]

Yesterday I built a 'plinth' which will have a big (2ft diameter) old concrete planter on top.
Far from perfect as I'm no bricklayer, and the old reclaimed bricks are distinctly variable in size and shape, but it's not going anywhere.
Besides, once the planter is up there (god know how that's getting done it weighs a ton) and has stuff growing over the sides, some of it will be hidden.
Just need to find a suitably sized slab to cap it.

 

[Nick DV]

Attempt 2 priming headstock. After lots of prep and some tests, swapped to the 1.0mm tip as this epoxy seems thin (or Im doing it wrong). Got quite a few runs.
View attachment 281642
View attachment 281643

To which I put a bit more on and blasted air at it I will sand flat tomorrow and another coat, after some practise on something else..

Then 21.5km run for shopping, fueled by Scotch, fruit pastels and codine. Followed by a recovery steak.
View attachment 281644

If the epoxy is very thin, then a 1.0mm nozzle may be too much, and sounds like you are applying too much paint in one go if you're getting a lot of runs.

 

[Brad93]

Random pic of my little folder. The workshop is starting to slowly move into the office now too as I couldn't get so much as another screwdriver in the workshop.

View attachment 281599

That’s a beautiful folder.

 

[Seadog]

Just need to find a suitably sized slab to cap it.

There's one underneath it