Today's Message Index:
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1. 02:38 PM - Drill speed choice (rayj)
2. 05:08 PM - Re: Drill speed choice (rayj)
3. 07:16 PM - Re: Drill speed choice (rv9jim@juno.com)
Message 1
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| Subject: | Drill speed choice |
Greetings listers,
I've been lurking for a number of years and am about to order the kit
for a 750. I'm trying to decide which drill to buy. I have always
heard that faster is better so I'm looking at a 6000 rpm drill. Is there
a down side to turning the bit that fast?
Thanks in advance for any advice.
--
Raymond Julian
Kettle River, MN
"And you know that I could have me a million more friends,
and all I'd have to lose is my point of view." - John Prine
Message 2
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| Subject: | Re: Drill speed choice |
I should have done more research before I posted my question.
I found a nice page with some very useful info. It answered my question
in nothing flat. Hope someone else will find it useful.
> http://www.littlemachineshop.com/Reference/CuttingSpeeds.php#Drilling
The answer to my question is that I can use the 6000 rpm up to a 1/4"
bit diameter (which is the chuck size) without exceeding the recommend
sf/m for 6061-t6.
Raymond Julian
Kettle River, MN
"And you know that I could have me a million more friends,
and all I'd have to lose is my point of view." - John Prine
On 03/30/2012 04:38 PM, rayj wrote:
>
> Greetings listers,
>
> I've been lurking for a number of years and am about to order the kit
> for a 750. I'm trying to decide which drill to buy. I have always heard
> that faster is better so I'm looking at a 6000 rpm drill. Is there a
> down side to turning the bit that fast?
>
> Thanks in advance for any advice.
Message 3
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| Subject: | Re: Drill speed choice |
Actually I find that a slow to moderate speed with the #40 and #30 drill
s works best. Plus, the bits stay sharp longer. Definitly have several
of the #40 and #30 bits. Four of each will last through the build. Tw
o of a #20 works nice for the "A-5" rivits. Plus having one each of the
longer 6" or 12" bits of the #30 and #40 are necessary in the tight pla
ces. Having a good battery powered drill with at least one extra batter
y is necessary. Air drills use a LOT of air. But then again, you need
a "Harbor Freight" air powered pop rivit setting tool. You do not want
to do the bird by hand squezer. Getting a spare manual poop rivit tool
is necessary just to get the tips. The flat tips are modified to conca
ve. This is done using the "Dremel" tool. Get the conical stone tips a
nd use them to create the concave tips. That is the cheep way. The dre
mel tool with many #60 grit sanding drums is necessary. Get the simple
single speed version. There are some other tools that are the same func
tion as Dremel. By the way, create a piece of 2 x 4 about 12" long that
has holes in the large surface side, Drill a hole for each drill bit in
groups with a good 1-5" between each size. Keeps you from putting them
down and loosing them----. More things if you want. I am aproaching
the end of my build of the 750. I have some pic's on the Zenith web sit
e under "Jim Nelson". There are some highly recomended changes for peac
e of mind (safety) that I recomend. Pic's on the mods and others on my
own collection of pic's. IF you want more info, e-mail me at RV9Jim@Jun
o.com and I will help you any way I can to build a safe and fun aircraf
t.
---------- Original Message ----------
From: rayj <raymondj@frontiernet.net>
Subject: Zenith750-List: Drill speed choice
Greetings listers,
I've been lurking for a number of years and am about to order the kit
for a 750. I'm trying to decide which drill to buy. I have always
heard that faster is better so I'm looking at a 6000 rpm drill. Is there
a down side to turning the bit that fast?
Thanks in advance for any advice.
--
Raymond Julian
Kettle River, MN
"And you know that I could have me a million more friends,
and all I'd have to lose is my point of view." - John Prine
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