Page 1 of 6

AutoTuba build. This is the last time...

Posted: Wed Feb 02, 2011 3:11 am
by digital_chris
I use ANYTHING but Baltic Birch. I haven't worked with Baltic yet, but my TT I used MDF, nice and flat but the dust is no good to breath, now some crap plywood, only slightly warped and it still sucks. Drilling into it causes chips, etc etc, ughh..

Anyway, I'll poct some pictures along the way. If I like it, I will def build another one, with nicer wood of course :)

Re: AutoTuba build. This is the last time...

Posted: Wed Feb 02, 2011 4:30 am
by Radian
digital_chris wrote:Drilling into it causes chips, etc etc, ughh..
Drill small pilot holes first....then http://www.billfitzmaurice.info/forum/v ... 14&t=11285

I feel your pain :cry:

Re: AutoTuba build. This is the last time...

Posted: Wed Feb 02, 2011 4:46 am
by digital_chris
It was chipping even with small pilot holes (5/64"), mostly when the bit exits the bottom of the wood :cussing: I mean, it's not a HUGE deal but I'd rather have a clean hole top and bottom of course.

I will keep in mind that trick for drilling close to the edge though, thanks for that :)

Re: AutoTuba build. This is the last time...

Posted: Wed Feb 02, 2011 9:10 am
by Bill Fitzmaurice
digital_chris wrote:It was chipping even with small pilot holes (5/64"), mostly when the bit exits the bottom of the wood
That's technique. When you drill through wood put a piece of scrap wood below it and that won't happen. If you have a drill press you never use just the metal table, you always have a piece of scrap wood on the table to receive the bit and prevent chipping and tear out.

Re: AutoTuba build. This is the last time...

Posted: Wed Feb 02, 2011 6:44 pm
by digital_chris
So it's not necessarily the wood but my technique? I'll give it a try, I know when I was drilling through both pieces together , the only chipping I got was wherever the bit exits the wood so it makes sense. From now on, I'll find a way to use scrap on the bottom :)

Thanks.

Re: AutoTuba build. This is the last time...

Posted: Thu Feb 03, 2011 2:29 am
by Dave Non-Zero
And use a high speed. I always try and use my mains powered drill for drilling because the slower speed of my cordless means more chance of chipping. And a nice sharp drill bit makes a big difference. :)

Re: AutoTuba build. This is the last time...

Posted: Thu Feb 03, 2011 8:23 pm
by digital_chris
Another good point, use high speed. Don't know why I didn't think of that :)

Re: AutoTuba build. This is the last time...

Posted: Thu Feb 03, 2011 8:27 pm
by digital_chris
Here are some shots of the beginning...

Image

Image

Image

Image

Image

Image

Tomorrow morning I should have some more pieces pre-drilled and bolted together :)

Re: AutoTuba build. This is the last time...

Posted: Fri Feb 04, 2011 8:10 am
by dno1gtbai
digital_chris wrote:I use ANYTHING but Baltic Birch. I haven't worked with Baltic yet, but my TT I used MDF, nice and flat but the dust is no good to breath, now some crap plywood, only slightly warped and it still sucks. Drilling into it causes chips, etc etc, ughh..

Anyway, I'll poct some pictures along the way. If I like it, I will def build another one, with nicer wood of course :)


To avoid chips, place a scrap piece of board under the one you are drilling should come out clean...

Re: AutoTuba build. This is the last time...

Posted: Fri Feb 04, 2011 8:13 am
by Bill Fitzmaurice
dno1gtbai wrote:


To avoid chips, place a scrap piece of board under the one you are drilling should come out clean...
Already covered, post #4. Forum etiquette: Read the entire thread before posting. :noob:

Re: AutoTuba build. This is the last time...

Posted: Mon Feb 07, 2011 1:24 am
by digital_chris
Hey Bill, I just got panels 1-4 screwed and glued to the side panel. Since my plywood is a bit warped, I can't get a few of them screwed/clamped perfectly at 90 deg to the side panel, will that mess up the cab tuning enough to worry? It's not that bad, but where panel 2 meets up with panel 3 at the 55 degree angle, (45 for me), neither part came out to be 90 degrees perpendicular, each a few degrees off.

Re: AutoTuba build. This is the last time...

Posted: Mon Feb 07, 2011 6:01 pm
by dno1gtbai
Bill Fitzmaurice wrote:
dno1gtbai wrote:


To avoid chips, place a scrap piece of board under the one you are drilling should come out clean...
Already covered, post #4. Forum etiquette: Read the entire thread before posting. :noob:

dident read the whole post. jus saw the first post and try to post ... was in a rush to leave the house ...

Re: AutoTuba build. This is the last time...

Posted: Mon Feb 07, 2011 7:20 pm
by Bill Fitzmaurice
digital_chris wrote:Hey Bill, I just got panels 1-4 screwed and glued to the side panel. Since my plywood is a bit warped, I can't get a few of them screwed/clamped perfectly at 90 deg to the side panel, will that mess up the cab tuning enough to worry? It's not that bad, but where panel 2 meets up with panel 3 at the 55 degree angle, (45 for me), neither part came out to be 90 degrees perpendicular, each a few degrees off.
It won't bother response at all.

Re: AutoTuba build. This is the last time...

Posted: Mon Feb 07, 2011 8:01 pm
by digital_chris
Good news, thank you :)

Re: AutoTuba build. This is the last time...

Posted: Mon Feb 07, 2011 10:48 pm
by digital_chris
@#$%^&*!

I just want to throw this thing away and start over! Son of a, this wood is by far the best to use. I know I'm stating the obvious but I just need to vent. My braces are being the biggest PITA, I can't cut them well, always coming out too wide or too narrow and I have no easy way to correct them. I just had to walk away even though I didn't want to... ughhh.