I use namecheap for mine.

https://www.namecheap.com/hosting/shared/?purchase_type=paid&period=p2y

Quote from: Magluvin on 2026.08.16, 19:53:43
https://metglas.com/magnetic-materials/

the cost of having to make such a core via machining and cost of materials, this plus time to cut and configure i would say it could be a great core.

mags

I remember this being discussed earlier ( somewhere)
The characteristics of laminations were not lining up with Device requirements for the best possible results, and I remember being perplexed as to the recommendation of an inexpensive.03mm soft enameled iron wire "was" acceptable.... Apparently soft iron (.03 mm ( bundled)) has properties which are quite interesting and appropriate for this Spider core.. and other (Hubbard ,Mag-vid and (a few others I can't recall ATM))
Chet

https://metglas.com/magnetic-materials/

the cost of having to make such a core via machining and cost of materials, this plus time to cut and configure i would say it could be a great core.

mags

would it be cheaper and maybe better to host here in the US?

mags

metglass makes a tape or say bendable strips. make a plan and form a spider core with it. 

mags

"a 6inch cube"

there are now 5 axis desk top machines. read an article that it is the new thing and believe it will hit big like 3d printers.

some are $10k and under.  but not completely out of reach.

https://www.amazon.com/Carvera-Desktop-Enclosed-Closed-Loop-Engraving/dp/B0F7LJ66BW/ref=mp_s_a_1_1_sspa?adgrpid=1334809614568020&dib=eyJ2IjoiMSJ9.fJWGxXBQtIw-hq_R5nVzE5tIU9yy4RQaRBlxL8Il4IDKsY6M8SjighJtwcALIXqbbTXtjYq6kwZsnvbccN_XvwL2z7C6nBFctMtH6lOCHBjQvItzIHQipa34Gp4R9-PbCgUtIhxOnPavUh2SOPdOy2prp6KOdhh8oo5TZKK5VKzTGTIpO2nfoSM9V3E_uLzgVFCDW6wWxRXpXb9J_C_KZw.MVygG-3se-nXRL8HIPUthZ3wVk-6LOJmbfvIhZVYpAM&dib_tag=se&gb=2&hvadid=83425875936026&hvbmt=be&hvdev=m&hvexpln=0&hvlocphy=71543&hvnetw=o&hvocijid=12454474134621764877--&hvqmt=e&hvtargid=kwd-83426733394048%3Aloc-190&hydadcr=20373_13325337&keywords=desktop+cnc+5+axis&mcid=8195aa6d2fbe3883945e9a754f0eb4b9&qid=1786901764&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfYXRm&psc=1


mags

Quote from: Chet K on 2026.08.16, 15:56:56
What would be a good size for the spider core blank ?

A 6" cube.

Quote from: Chet K on 2026.08.16, 15:56:56
And should we consider submitting a spider core rendering ... for a quote on finished monolithic core ?

We could but it would raise some eyebrows.

Quote from: Chet K on 2026.08.16, 15:56:56
At the moment this center core piece is on the list .
And toroid size for arms ( prior to machining)

Yes because it is easier to obtain.

Quote from: Chet K on 2026.08.16, 15:56:56
To note above is for possibility of building on a budget ( as Itsu has started) , and also there was mention of soft iron .03 mm(?) Enameled wire,
Bundled to the required spider core shape ?( for cost savings and getting more access to experimenters.

Yes, a bundled enameled fine iron wire would be the poor man's substitute for a ferrite.

Quote from: Verpies on 2026.08.16, 05:33:45
Also, in order to carve out a monolithic spider shape without air-gaps requires a huge chunk of ferrite.  The maximum manufactured chunk size (before they cut it up) is an information that only the OEMs know and it is very hard to come by.

Verpies,
Hopefully this coming week will show a path towards these OEM's...so as to get some quotes on a monolithic chunk appropriate to the task .
Mark D gives the impression there are many more than the link he forwarded !

What would be a good size for the spider core blank ?
And should we consider submitting a spider core rendering ... for a quote on finished monolithic core ?

At the moment this center core piece is on the list .
And toroid size for arms ( prior to machining)

To note above is for possibility of building on a budget ( as Itsu has started) , and also there was mention of soft iron .03 mm(?) Enameled wire,
Bundled to the required spider core shape ?( for cost savings and getting more access to experimenters.

A shared hosting (not a VPS server, which would be better) costs this much per year here:

25GB    £21
50GB    £42
100GB    £84
200GB    £168

These are promotional prices till the end of the month (with VAT).

Quote from: Chet K on 2026.08.16, 00:05:25
...and we need some high permeability ferrite components to complete .

High permeability is desirable but so is the lack of degradation of this permeability at higher frequencies.
Also, in order to carve out a monolithic spider shape without air-gaps requires a huge chunk of ferrite.  The maximum manufactured chunk size (before they cut it up) is an information that only the OEMs know and it is very hard to come by.