AutoTuba build. This is the last time...

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digital_chris
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AutoTuba build. This is the last time...

#1 Post 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 :)

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

#2 Post 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:
Good food, good people, good times.

4 - AT
1 - TT
1 - THT Slim
2 - SLA Pro 4x6 Alphalite
1 - T18

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

#3 Post 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 :)

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

#4 Post 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.

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

#5 Post 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.

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Dave Non-Zero
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Re: AutoTuba build. This is the last time...

#6 Post 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. :)
-1 for thought terminating cliches.

Built and/or own:
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digital_chris
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Re: AutoTuba build. This is the last time...

#7 Post by digital_chris »

Another good point, use high speed. Don't know why I didn't think of that :)

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

#8 Post by digital_chris »

Here are some shots of the beginning...

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

dno1gtbai
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Re: AutoTuba build. This is the last time...

#9 Post 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...

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

#10 Post 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:

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

#11 Post 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.

dno1gtbai
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Re: AutoTuba build. This is the last time...

#12 Post 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 ...

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

#13 Post 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.

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

#14 Post by digital_chris »

Good news, thank you :)

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

#15 Post 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.

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