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Re: Building an archtop of some sorts
Posted: Mon Nov 28, 2016 4:36 pm
by Bg
jvpp wrote:Yes, i have used both quite a bit on certain sections of the top... the scraper quickly removes the chisel dimples/uneveness and leaves a surface rady for sanding. Great tool!
The problem I have with the plane, even on the smallest blade protrusion, is that it cannot handle the sections on the top where the grain 'doesn't behave'. Great for sections where the grain is cooperating so to speak. Maybe it is because of the macrocarpa (it being a softwood) that makes using the thumb planer difficult. On this top I had much better control with a rasor sharp chisel which allowed my to take tiny cuts out in the grain induced difficult areas.
So to avoid having to carve for the next month or so, I decided to make the concave/convex transition narrow.
As the inside carving won't be that critical from a visual point of view, I intend to practice and use the planer a bit more as it is indeed a neat little tool.
Anyone any feedback on the neck question I asked?
Thats looking really good! I much prefer a scraper, comes from my furniture building days
Glad you liked the flap wheel approach. I've done some rad carving with one. I still have a parker body in korina on the workbench, most of that done with the flapwheel
Re: Building an archtop of some sorts
Posted: Mon Nov 28, 2016 4:38 pm
by Bg
H671 wrote:This might be a bit late, but you can buy a special carving disc to fit angle grinders. I can't remember where they are sold though.
yep you're late, thoroughly 'discussted'
Re: Building an archtop of some sorts
Posted: Mon Nov 28, 2016 5:38 pm
by Jay
GrantB wrote:Cool stuff.
The neck pocket - how deep will it be? Or is that finished depth?
Although it will be an archtop, I intend to glue the neck in like an LP. So the planed section you see with the pencil mark will have a U shaped bit cut out. A bit like the two pics below; The top is 20mm, the bottom is 10mm and the body will be 30mm deep, so the tenon will be about 40-43mm high (it slopes) and the length yet to be determined.
FYI, the current length from neck pocket to end of neck bit is 113mm, if I cut it at the pencil line, 65mm will be remaining.
So the question is, if I cut off the neck bit at the pencil mark will I have enough 'structure' left for a solid LP type fitting.
Re: Building an archtop of some sorts
Posted: Mon Nov 28, 2016 8:42 pm
by StrummersOfThunder
What's up with the 100% convex arch? Didn't want to transition from concave ? Won't itlook like someone has pumped up a gretsch with a bike pump?! Or is this a recognized thing? Educate me !!
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 7:15 am
by willow13
jvpp wrote:
So the question is, if I cut off the neck bit at the pencil mark will I have enough 'structure' left for a solid LP type fitting.
its called strong glue
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 9:49 am
by Bg
jvpp wrote:GrantB wrote:Cool stuff.
The neck pocket - how deep will it be? Or is that finished depth?
Although it will be an archtop, I intend to glue the neck in like an LP. So the planed section you see with the pencil mark will have a U shaped bit cut out. A bit like the two pics below; The top is 20mm, the bottom is 10mm and the body will be 30mm deep, so the tenon will be about 40-43mm high (it slopes) and the length yet to be determined.
FYI, the current length from neck pocket to end of neck bit is 113mm, if I cut it at the pencil line, 65mm will be remaining.
So the question is, if I cut off the neck bit at the pencil mark will I have enough 'structure' left for a solid LP type fitting.
Don't see why not, they do the shorter neck tenons too. haven't heard any of them snapping off?
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 10:29 am
by GrantB
I agree - as long as the pocket is deep enough and the length doesn't go any shorter than what is drawn, it should be OK. In saying that, if it goes horribly wrong, Bg and I can delete any text here that has us saying anything at all....and in fact, make it look like we warned you against such a thing.
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 3:03 pm
by Jay
StrummersOfThunder wrote:What's up with the 100% convex arch? Didn't want to transition from concave ? Won't itlook like someone has pumped up a gretsch with a bike pump?! Or is this a recognized thing? Educate me !!
You never heard of a balloon shaped carved archtop? Really? It much better supports internal soundwaves bouncing off the top and exiting in an amplified fashion through the F holes. It is a well known fact
Look it up mate!
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 3:08 pm
by Jay
GrantB wrote:I agree - as long as the pocket is deep enough and the length doesn't go any shorter than what is drawn, it should be OK. In saying that, if it goes horribly wrong, Bg and I can delete any text here that has us saying anything at all....and in fact, make it look like we warned you against such a thing.
I have taken a snapshot and filed it.
I think I'll extend the tenon to the other end of the body
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 4:28 pm
by Bg
jvpp wrote:GrantB wrote:I agree - as long as the pocket is deep enough and the length doesn't go any shorter than what is drawn, it should be OK. In saying that, if it goes horribly wrong, Bg and I can delete any text here that has us saying anything at all....and in fact, make it look like we warned you against such a thing.
I have taken a snapshot and filed it.
I think I'll extend the tenon to the other end of the body
photoshop trickery!
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 7:06 pm
by Jay
As Mr Strummers so eloquently observed there was not enough 'concave arch' for the Bigsby to sit properly on the top...
So spent a good part of the afternoon carving with the thumb planer. In fact all of it was done with it. I finally got the hang of it
This is how it looks now. Just the horns remaining.
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 8:11 pm
by H671
That thumb plane is a little ripper
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 8:17 pm
by Lostininverness
How's the blister from the plane?
Re: Building an archtop of some sorts
Posted: Tue Nov 29, 2016 8:59 pm
by bender
Yes! Looks much better.
Re: Building an archtop of some sorts
Posted: Wed Nov 30, 2016 6:56 pm
by Jay
H671 wrote: That thumb plane is a little ripper
Indeed, but it rips gently once you get the hang of it. I had to back it right off.
Post by Lostininverness » Tue Nov 29, 2016 8:17 pm
How's the blister from the plane?
I got the blister from the chisel. The thumb plane is fine.
Post by bender » Tue Nov 29, 2016 8:59 pm
Yes! Looks much better.
Yes, but still not satisfied so took more off today. I now know why moulding/copy routers exist. It would be so good to have one...
Tried to change the brightness and contrast to bring things out but I need a course from SB for that. All the pencil marks are dimples that need sanding out.
I am slowly getting enough of this, ie,
about the amount of work involved.
Looks like the skin of someone with a really bad skin disease
