I would probably get a Beard Legend or Scheerhorn cone and trim the excess carefully with sharp scissors.

I much preffer a cone already made in the right size (exist?). The problem is that cones came smaller than mine (9,5) 

Just to be clear. I believe this is a biscuit bridge guitar that used a unique 10.5 inch biscuit style cone. If correct this will not accept a dobro/spider bridge style cone.

Beard did make the BC-10.5 for this guitar. It's not currently listed in stock but certainly worth reaching out to the Beard shop for availability.

I am not aware of anyone else that spun this cone.

h

quote:

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Originally posted by hlpdobro

Just to be clear. I believe this is a biscuit bridge guitar that used a unique 10.5 inch biscuit style cone. If correct this will not accept a dobro/spider bridge style cone.

Beard did make the BC-10.5 for this guitar. It's not currently listed in stock but certainly worth reaching out to the Beard shop for availability.

I am not aware of anyone else that spun this cone.

h

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Howard, Blue Note Woodworks in Oregon has been a main distributor for Quarterman cones for some time. He has (apparently in stock) a 10.5" biscuit bridge Quarterman - any idea if this will work for the Dobro in question, or is it unique to National guitars? 

https://bluenotewoodworks.ecwid.com/Quarterman-QND-10-Res-O-Cone-10-1-2-p84208294

Good catch. National's biscuit was only 9.5inch AFAIK. 10.5 was unique to Dobro. This should be the correct cone.

I suggest the OP reach out and verify. I'd be optimistic though.

h

Alejandro, you might want to add at least your first name and where you live to your profile so that it shows on the screen when you post here. No one is going to remember that abozz2012 is a guy named Alejandro. 

So you got your answer - click on the link in my earlier post for Blue Note Woodworks in Oregon. 

Rob the owner is a nice fellow, I have spoken with him on the phone. And he has a long relationship with John Quarterman, the original spinner of modern high quality cones who worked at Dobro in California for many years. 

Thanks for all the answers! I will take the risk and buy that Quaterman cone! I’m traveling to EEUU in 10 of june until 21, then let you know if work in my Dobro.
My father tell me that in the shop back in 93 the sellman recommend this guitar because that year Dobro was sell to Gibson and that was the last bunch made by Dobro (pre Gibson). The guitar is very nice made, the neck is a rock, flammed maple, I know is not the best years of Dobro but is a treasure for me.

Let me also point to the possibility that you'll need a new biscuit bridge and setup after installing the new cone. No 2 cones have identical profiles and it's the nature of biscuit bridge guitars. (since the biscuit bridge attaches directly to the cone)

h

Don't let anyone run your guitar down, I have a '94 Dobro model 33 and it is excellent, not a darn thing to complain about. My understanding is that they made these to accept either the biscuit or spider cone, I could be wrong but I'm sure I've seen models like these with spiders.

Howard! Thanks for the info, I’m going to add a biscuit bridge to my buy. I can made the setup myself or is a luthier thing?

Wildeman nice guitar you have there! And the spider bridge is better?

Nor to speak for wildeman, but the sound and vibe would be  different  between the spider bridge version and the biscuit bridge. Not necessarily better or worse - more like personal preference. 

The spider is typically brighter with longer sustain, and with the biscuit version the sound is likely darker, a little more subdued and  a note decays a little  faster. More of the swampy blues sound. 

The ability to set up is highly dependent on your luthiery skills an the tools on hand.

h

quote:

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Originally posted by abozz2012

Howard! Thanks for the info, I’m going to add a biscuit bridge to my buy. I can made the setup myself or is a luthier thing?

Wildeman nice guitar you have there! And the spider bridge is better?

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Thanks, the spider/cone setup is not better or worse, just different.

Ok I think I need to know if my resonator can get a spider bridge, because I would love to try the brighter and more sustain sound. I’m going to research that and buy the cone and the spider.

I do not have any luthier skill. But hope some local luthier help me.

NO! The DM 75 cannot be converted to spider bridge.

I think you have to research and listen to various guitars before you make any decisions.

I think that is all I have.

h

Ok Howard, thanks for all the info again. And I will come back when the cone arrives.

OMI did make these bodies to accept either cone,what it takes to do it, I don't know, I'd imagine a spacer would be needed so, not a drop in deal but depending on how bad you want it, it can be done . Here's a 33 with a spider.
ebay.com/itm/234179267968

hangoutstorage.com/resohangout...82011.jpg
Looks like they used a plywood spacer.

The M33 was offered both ways. The M75 was biscuit only as far as I am aware.

h

I was looking my actual cone and I can see is not right! Hope the picture attached is clear. It is proper fit in almost all the circunference and then it falls a little and you can see the hole. Maybe my father bought in the past the wrong size of cone. A smaller one.

quote:

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Originally posted by abozz2012

I was looking my actual cone and I can see is not right! Hope the picture attached is clear. It is proper fit in almost all the circunference and then it falls a little and you can see the hole. Maybe my father bought in the past the wrong size of cone. A smaller one.

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That just looks a little deformed, you can probably, carefully reform it. What is actually going on with your guitar? Is it playable? If that is the only problem, you might not need a new cone. I've seen totally collapsed cones reformed and playable, I wouldn't do it, but it can be done.

• Is perfectly playable. Beautiful indeed! I’m going to open the front today and try to reform the cone. But I think is smaller than the right one. 9,5 instead of 10,5). But sound great!! Heheh. I want to change the cone oy because this one must be 7 years old, and I read the lifespan os 2 years. Right? Thanks for all you kind answers

i can take the risk of buy an spider bridge and try. Must be a 10,5 spider size? Right? 

quote:

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Originally posted by hlpdobro

The M33 was offered both ways. The M75 was biscuit only as far as I am aware.

h

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My understanding is that those metal bodies all used the same body with different cosmetic options, plain, sand Blasted like a style O or engraved, also I think they developed that big cone so that they would have the option of using either. I might try it on mine sometime if I can make that spacer, I have all the other stuff laying around.

It would be nice to have a comprehensive book about post war Dobro's, probably wishful thinking though.

quote:

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Originally posted by abozz2012

Is perfectly playable. Beautiful indeed! I’m going to open the front today and try to reform the cone. But I think is smaller than the right one. 9,5 instead of 10,5). But sound great!! Heheh. I want to change the cone oy because this one must be 7 years old, and I read the lifespan os 2 years. Right? Thanks for all you kind answers.

I don't think you have a 9.5 cone in there. I'm not a impulsive cone changer like a lot of guys, I wouldn't dream of changing my prewar cones to new ones unless they were severely damaged. I think this phenomenon started with the invention of newer, thinner cones. I'd pull your cone out and post pictures, it can probably be fixed.

 

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If you do decide to make the plywood spacer to accommodate a spider cone, make sure you get the right cone. While readily available 10 9/16 " spider cones can be trimmed to fit, it is much easier to use a Quarterman QD 1/10 or a Replogle Standard which should be drop-ins on your metal body guitar.

https://bluenotewoodworks.ecwid.com/Quarterman-QD-1-10-Res-O-Cone-10-1-2-p84148829

https://www.replogleresos.com/product/replogle-resonators-spider-cone-standard-10-1-2-series/