Marconi knob Яeverse Engineering

[mrtrev]

What does everyone reckon?

If you build it, they will come...

Ha hahaaaa I like it!

 

[dustbro]

Dustbro also said he was getting a quote in a few days (post #45) and would let us know.

I just got a quote for the knobs. The brass insert alone is $5.50ea (USD)
Two piece plastic knob as per original sample supplied, complete with set screws and brass insert.
1000 - $9.75 ea.
2000 - $9.25 ea.
plus additional 1 time setup charges of:
Tooling ( insets only ) $3,500.00 in advance.
Drilling fixture $275.00
The initial investment would be $13525.00+shipping. After its all said and done (shipping to me + shipping to you) the knobs will probably run between $15-$20 each. I'm not sure if we're able to order in different colors, or if this is just for one color.
it seems like a lot of work to save $10 from buying them from Avril for this deal.

Hopefully the $5 knob deal comes thruu

 

[ChrioN]

Avril doesn't sell these anymore. Correct?

 

[okgb]

they're obviously not hungry for business
Man hate to go to the chinese

 

[pongi]

???

we had a much better quote from onlyme!
or do i miss something?



---------------------------------------
The guys that quoted the knob with hard plastic insert have got back to me saying
They can supply the brass Part at a cost of 500 off @ £0.72 each. 2000 off @ £0.65 each


That's really good pricing.

So, the original quote from this place was:
£2.30 | $3.83 | €2.63  each

Now add £0.72 or £0.65 for the brass insert, and you get:

£2.95–£3.02

$4.72–$4.83

€3.24–€3.32

As far as I'm concerned, that's good enough.
Can we see samples of their work?
Can they do color-matching?

 

[Skylar]

onlymeeee had much better pricing from a place in the UK.

Their website:
http://www.hmtooling.co.uk


So, if someone wants to organize, this is the place to go.
(unless someone has a better quote)

 

[Neil]

I don't mind organizing it. Would have to be after christmas though.

Is this the right way to go about it?

Having looked through the thread numbers I can see just over 200 knobs being
spoken for. (A few 'I'm in' without specific numbers as well though)
So I don't think we can just buy them and split costs between us.  Would
end up too much. 

What does everyone reckon?

I don't mind paying up front, in fact I figured that would be a given for this type of group buy. I only want about a dozen knobs but I also don't mind buying extra if it'll help make a quota.

And after Christmas is good, whenever is convenient. If I can help in any way let me know.

 

[DowntownDan]

Hello Folks,

I'm joining this conversation late, but I would be in for at least twenty of each.
I have a colleague that may be in for a bunch more as well.

Dan Garcia

 

[iangomes]

nobody wants to put up the dough! I still think mini knobs for PP's 500 neve are an awesome idea.

 

[Moby]

I'd be up for at least 20 reds, maybe more...  Any updates?

 

[Skylar]

I'm going to try to jump on this in a couple months when the mic body thing has been finished.

 

[mat1306]

Hi guys

Can someone upload all the zip files again please?

I will ask for a quote that will be very intresting...

 

[andre tchmil]

I'd be up for at least 20 reds, maybe more...  Any updates?

same here, maybe more

 

[neve2254e]

Hi All.

Just used my last Marconi knob!  Dan Alexander is all out, Mark at BAE isn't selling them any more.
Skylar, you said you reached out to Davies, did you ever here anything from them?  or have you talked with Rogan?
I also have a friend that works in injection molding, I will email him the files today.  I am very interested, and willing to pony up the cash.
kind regards
Eric

 

[Siegfried Meier]

Anymore word on this?  I, too, have discovered that no one else is selling them anymore.

Thanks,
Sig

 

[Di_Sousa]

Hi All.

Just used my last Marconi knob!  Dan Alexander is all out, Mark at BAE isn't selling them any more.
Skylar, you said you reached out to Davies, did you ever here anything from them?  or have you talked with Rogan?
I also have a friend that works in injection molding, I will email him the files today.  I am very interested, and willing to pony up the cash.
kind regards
Eric

Hi Eric,
injection moulding is a really good alternative.

I wouldn't mind a cheaper and simpler alternative to the original knob.
Something like:

- same design and size
-same color

-without the clear plastic ring, it could be from the same plastic and color of the knob (easily done with a mould)
-with a cheaper alternative for the brass insert and 2 set of screws, maybe another simpler insert and just 1 screw.

 

[kazper]

Your basic choices for inserts are Steel, Aluminum and brass. Machining wise they should be the same work provided the small differences that each material makes when working with them. Those slight differences would be null compared to the  differences would be the cost of material. The flip side of that is that steel will rust, some aluminum alloys may be seen as too soft, which is why brass was probably used.

But injected molding is probably how parts of this could be made, you would ultimately leave a portion of this up to the manufacture. There is really only 3 types of parts necessary.

Knob (red part including brass insert, screws, and adhered clear skirt.

 

[daggertX]

I am interested in a dozen or so when these are complete;

 

[frederikkofoed]

Hey Folks.

I've been in contact with a moulding company, to hear if they could give me a nice qoute.

They seem very interested in manufacturing these, and i have send them the solidworks files..

They have replied with the following questions:

Dear Frederik,

Thank you for your files.

We have analyzed your parts, 3 pieces in total. We will quote the molds for you. Before preparing the quote, we have a few questions to ask you in order to make it more exactly meeting your needs.

1. One part has 2 screw holes with thread. We want to know if the threaded holes are made by injection with unscrewing system, or be made by post-injection process. Please see the attached file for the detail.
2. How many cavities do you want for the molds?
3. What's the plastic material for the parts. In case of same material, will you consider family molds to save cost?
4. What steel you want for the molds? Alternatively you can tell us how many parts you want to manufacture from the molds, and we will choose the proper steel for you.

We only received your part files without mold requirement, so we need your reply to quote more precisely. Thank you for your early reply.

If somebody (Skylar) could help me a little here it would be neat.. As i do not have enough knowledge to know what would be the best decision.

I have attached the picture i recieved from the factory.

- Frederik

 

[Skylar]

First of all, they need to be aware that the inner part should be a machined brass insert.
I think they're assuming it should be plastic.

So that answers question 1...brass insert obviously machined and tapped.

2. The number of cavities tells you how many knobs will be produced in one injection cycle.
I think that this should be determined by them based on how many knobs we need per year.

3. The clear skirt should be either acrylic or polycarbonate. The main knob should be polypropylene or high-density polyethylene.

4. Have they given you a rough quote yet? Did you tell them how many knobs you needed?
If they're doing the molds from steel (instead of aluminum), they may be assuming you need 10s of thousands per year.
Steel molds with many cavities are going to be expensive.

I would guess that 1000 knobs per year would be a good starting point.

Is this place a generic moulding company or a proper knob manufacturer?
If they're not a knob manuf., then they probably either won't to know how to do the brass insert or are going to charge a lot for it.

Brace yourself for a ridiculous quote from these guys.
[of course, I could be wrong!]