One of the oven knobs broke yesterday. Tracking down the official Stoves spare, it's £11.76
However, it's telling where the thing comes from. They couldn't even be bothered to hide it. No prizes for guessing where it's made ...
Quite. ;-)
I'm currently designing one of these for my mate to print himself:
This is almost a poster child for print-at-home (or local supplier) via
3D printing.For now I've wrapped a bit of sellotape around the cracked bit. It can't expand so still turns the spindle.
If I can source a convenient piece of tube/pipe, I might be able to make a more permanent fix.
I wonder if the spindles are generally a standard diameter ?
Won't match, but:
Who gives a shit :) ?
That's more what I was imagining. Notice that it can fit 5 sizes for that price.
Stoves can FRO.
many thanks !
Yes. Almost all control pots have either a 1/4" or a 6mm shaft.
For a time some miniature kit had smaller, but they are not common today.
Three types of fastening are in play
Having been in the business of designing knobs once you need to put the cost in the context of what is involved.
You can spit out a million knobs for a penny each. Putting a legend on them costs a little more, but the tool that is used by the injection moulder can be upwards of £50,000 representing many man hours of labour either on a spark erosions milling machine or on some kind of CAD package designing them.and a CAM CNC mill plus spark eroder. This is a serious investment in skill and kit.
Add to that the overhead in processing the order for a poxy little knob and a tenner or so is not unreasonable,.
With sintered 3D printing, will the pendulum swing towards making tools that don't last very well but are vastly cheaper to make?
Jethro_uk <jethro snipped-for-privacy@hotmailbin.com posted
Last time, I used
though the website is no longer accessible on my browser.
For short production runs, yes. Sintering makes metals and ceramics, not moulded plastics though - ordinary 3d printing does that but at a snails pace.
What I would think is happening is that prototypes are done on 3d printers to prove the design, before an expensive mould is made.
What I meant is that I was wondering whether you may start to see mould tools made by 3D printed sintered materials. That's going to be loads cheaper than spark erosion, although I'd expect the final tool not to be as hard-wearing.
So, instead of the tool costing £50k, it'll cost far less but won't allow millions of mouldings. I'm really posing this as a question for the assembled experts to answer.
Oh sorry, I totally misunderstood.
Mmm. I think you are probably right. But then again CNC mills are very fast and accurate. So the man hours are coming down on all this
I think its too specialised for the armchair experts here. I was never a materials scientist.
Is that how much Tim is worth?
Probably less. The £12 is for one that ****s.
That SKU seems to be for hinges?
Try this link for several universal oven knobs ..
Possibly cheaper on ebay..
They don't last very long as the adapter insert means that the plastic of the knob is very thin. They should really be reinforced with a metal band. These are £6.79 for 4:
:-)
There is no need to asterisk the word "works".....
so where is it then?
They're made by a guy in his moms basement.
so how does having a 3-D printer re-create the metal springy bit that actually makes the knob fit snugly (oh err missus)
tim
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