good drill bit needed
#2123109
08/02/16 01:17 AM
08/02/16 01:17 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
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to drill rocker shafts (1/8). got a carbide drill bit ($5) & just started on it for a minute & the bit wants to skid off of the curved surface so I may have to file a very small flat to get it started but I'm wondering if it is going to be hard enough to do the job. your thoughts please.
live every 24 hour block of time like it's your last day on earth
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Re: good drill bit needed
[Re: RapidRobert]
#2123115
08/02/16 01:26 AM
08/02/16 01:26 AM
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Joined: Jan 2011
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astjp2
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Was it from an industrial store? or from a homedepot/lowes? A true tungsten carbide bit will be hard enough, a plated one may not. You may need a starter bit to get you going. https://en.wikipedia.org/wiki/Drill_bit#/media/File:CenterDrills123456.jpg
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: good drill bit needed
[Re: astjp2]
#2123118
08/02/16 01:28 AM
08/02/16 01:28 AM
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Posts: 36,041 Lincoln Nebraska
RapidRobert
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I'm thinking it was an "Irwin" in a yellow blister pack from a true value hardware store. there is a graingers close by if need be. EDIT tomorrow I will try a mini bit to get a hole started if it will start the hole
Last edited by RapidRobert; 08/02/16 01:29 AM.
live every 24 hour block of time like it's your last day on earth
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Re: good drill bit needed
[Re: MR_P_BODY]
#2123120
08/02/16 01:30 AM
08/02/16 01:30 AM
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RapidRobert
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mini drill press/drill press vise/shaft wrapped/clamped in a rag
live every 24 hour block of time like it's your last day on earth
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Re: good drill bit needed
[Re: Stanton]
#2123145
08/02/16 02:40 AM
08/02/16 02:40 AM
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RapidRobert
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That's what I needed to hear!
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Re: good drill bit needed
[Re: RapidRobert]
#2123168
08/02/16 04:19 AM
08/02/16 04:19 AM
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astjp2
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Mcmaster Carr will have what you need in about 3 days....put the Irwin back so you have it for your dishwasher... I'm thinking it was an "Irwin" in a yellow blister pack from a true value hardware store. there is a graingers close by if need be. EDIT tomorrow I will try a mini bit to get a hole started if it will start the hole
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: good drill bit needed
[Re: RapidRobert]
#2123329
08/02/16 12:08 PM
08/02/16 12:08 PM
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jcc
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If you can't dazzle em with diamonds..
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mini drill press/drill press vise/shaft wrapped/clamped in a rag The rag isn't helping, use alum spacer blocks, if marking the steel rocker shafts is your concern.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: good drill bit needed
[Re: RapidRobert]
#2123365
08/02/16 12:58 PM
08/02/16 12:58 PM
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Moparnut426
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Ive had great luck in the past using a smaller piece of angle iron welded to a heavy flat that you can vice into the bed of the drill press, then you can use another clamp and hold the shaft into the valley. once you get one hole drilled you can drill through and put a bolt in that hole to keep the shaft the same.
Last edited by Moparnut426; 08/02/16 12:59 PM.
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Re: good drill bit needed
[Re: Stanton]
#2123377
08/02/16 01:22 PM
08/02/16 01:22 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
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I'm gonna get after it today. this is the last fabbing needed on this 360. thanks guys!
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Re: good drill bit needed
[Re: RapidRobert]
#2123382
08/02/16 01:26 PM
08/02/16 01:26 PM
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CMcAllister
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Have you tried centerpunching it to get a location and prevent the bit from skidding around? That's a good way of getting an idea of hardness. If you can't get a centerpunch mark in it, you may have a tough time getting a drill bit through it. Is the shaft hard chromed?
If the results don't match the theory, change the theory.
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Re: good drill bit needed
[Re: 440dart]
#2123833
08/03/16 02:00 AM
08/03/16 02:00 AM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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Colbalt probably wont do too well, carbide to get through the hardened outer surface. Cobalt from Grainger item# 1G865
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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