MIMF

An update on the amp - I went for a combo amp. https://youtu.be/TsT1MaZPGHs It's now assembled, although the front baffle needs fixing once I have the speaker cloth and tolex done. I have some shielding I need to add too. Specs: * 1x12 using a Celestion G12M-65 (12" 65 watt speaker) * 585Hx560W...

Nice! (the schematic shows the two additional stages for the V2 mod that I will adjust) Next will be the enclosure, for the design there's two options: 1. Separate boxes - a head box for the amplifier and a 1x12 cabinet for the speaker, however a 1x12 looks odd and the amp is easy to knock off the c...

I have some TAD 12bh7-str and JJ ECC99s that also fit the same long B9A socket format. The transformer is a Hammond 125B. A 5W push-pull that has a few options for use: Screenshot 2024-05-13 at 06.45.35.png The differences between Rob's EF80 JCM and mine, are that this one has: * Higher voltage powe...

And update following changing the NFB to sit on the 16R speaker tap, this improves the sound greatly: https://youtu.be/GvhyhcgSZhg So I'm happy with 'version 1' of the amp. I have some odd now in mind that I'll order parts for and add in. The additional parts will also increase the B+ for an additio...

So some background noise, power on, then pre and master volume noise floor now I've had a go at reducing the hum. It's probably still uploading but has about 5 mins left.. https://youtu.be/Aw74li3kovc In short * open chassis with out full shielding or shielding on the power cabling or EF80s. * still...

And the rectifier.. IMG_2575.jpeg So a normal JCM and most tube amps have the power going to the power stage, then to the pre-stages through successive filtering. The issue is the little EF80 pentodes can't cope with the high voltages so we have to have two separate power supplies - one for preamp (...

So the plan was always to follow up building the DIY guitar with a DIY companion amp. The requirements: * Marshall JCM800 -- this has always been my iconic amp * Playable in a small mancave without annoying the street My research brought me to Rob Robinette's great site (fenders and Marshalls etc) w...

Just to add to this as a follow up. The guitar has been with me to France the bespoke travel case I made for it. During that trip I modified the opensource ZenTuner Mac programme to use my mini-fuse 1 and to use a higher 24bit 176kHz rate. It's now a super fast and accurate tuner that provides a ver...

Hello, I have a question that I'd sure appreciate some guidance on. Tonight I'm beginning (or would like to begin) the shaping of the neck back on a 28 5/8" scale baritone electric. Fortunately, I am being tutored through this by a very well know luthier in Wilmington Ma, that has seen through...

So I've repeatedly intonated, corrected, measured the fretboard frequencies against my calculated frequencies - apart from a couple of lifting frets which I'll ignore for now - the intonation error for a fret for any string is at maximum 0.28%. I think that will do for now :D Here's some ambient noo...

So there's some issues - neck-string angle, I recessed the jack the wrong way to the way the upwards facing jack is meant to sit so that needs sorting. And the nut + frets need sorting but I miss playing it so here it is for a bit..

The figure is caused by periodic changes in runout, so sometimes you're cutting with the grain and sometimes against it as you go along the grain. Violin makers often carve across the grain to avoid this, and finish up with scrapers and sandpaper. With birdseye that's not an option: there's no 'goo...

Use sharper tools, I think. I have the same on birdseye maple, very easy to get tearout, and very hard to sand it out too, so I left it (also guitar for my own use, and pretty "experimental" too so let's first see if scale length and tuning work out). I’ve experienced birds eye maple with...

I'm currently building a guitar with a flame maple top that runs vertically and grain that runs horizontally. It's 20mm thick and I'm carving the top with a Rustings Danish Oil finish (multiple applications). However I'm seeing some, what could be described as 'chip out' leaving small holes speciall...

Update, I've reapplied the danish oil - I'll let this harden and then use it to prevent any flame chip out during sanding.

Let the body carving begin!

Still have a way to go but starting off..

I've recorded my first ever video :D It's recording the bridge pickup through an audio interface mixed onto the video of me gibbering on (this is why there's a little treble echo in some spots). The audio chain is SD Sentient (no tone controls) -> minifuse 1 @192KHz/24bit with a little pregain -> ga...

An update, I still have alot todo. The idea is that I spend a little time playing and then deciding precisely of the changes I want to make. Some Danish.. and the front is starting to pop. IMG_2169.jpeg The rear - you'll note the temporary electronics :D IMG_2168.jpeg And the head IMG_2170.jpeg So f...

I had a busy afternoon - I slimmed down the fretboard thickness, dropped the nu height, levelled and then releveled after putting in the 16" radius.The I installed the frets, ground and filed but there's still some additional work required on the frets, the fretboard just like the rest of the g...

I calculate that there’a about 188lb or 90kg tension so mu thinking is to carve the neck thickness for 28-30mm.