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Old 07-09-2009, 06:25 PM
fpm fpm is offline
 
Join Date: Jun 2009
Location: usa
Posts: 10
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HF 7x10 boring/tool help

Hey guys, back again with more questions.
I have been practicing alot withthe HF7x10 I have. Having fun with it. I started at @300 rpm making 0.025mm passes, now I can to 0.075mm passes and increasing the speed to @ 600rpm I can only assume since the HF is made kinda cheaply, that it really doesn't get moving (the chuck) til just past the second bar on the dial? And I can do 0.125mm cuts on facing with a bit higher speed. Is all this OK, or do I have to keep the aluminum and cold roll steel down in the 300's like mini-lathe recommends? All the speeds I have seen on youtube are rather fast.

Any way I would like more info on boring and making inside diameters.
I am making spacers, and need a 20mm centers I.D. (the spacer is 35mm diameter O.D.). I tried a 3/4 inch drill bit and milled out the difference with one of the 5/16 angled bits with a few passes. Seems alittle neantherthal-ish,but it's the only way I can figure out how to make that big a hole. lol.
Now the question. What boring tool can I use to get a 20mm diameter center? Continue doing my method or is there a simplier way? My non HSS 3/4 bit is now dull and Home Depot is out of this particular bit.
I would like someone to show me what I need exactly and I will buy it!
I want to make spacers that are 35mm O.D. X 20mm I.D. X 25mm long(thick).

Any help would really be appreciated.

This is what I have been practicing with 6061 ally. Frame slider dimensions.........



It's not rocket science but IF I can one day make some motorcycle parts, that I would have really accomplished
something! People have asked me several times about my custom motorcycle's single sided swing arm. I measured the spacers and now I practicing on making them myself and cutting out the middle man that made them
for me! The material is cheap, it's the labor and know that costs money.
-FPM
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