Search found 237 matches

by Mcgyver
Sun Jun 15, 2008 4:50 pm
Forum: General Discussion
Topic: DIY gear hobbers, anyone know of any?
Replies: 18
Views: 14877

there was also a build article on it in Model Engineers Workshop, also in the 90's i think. the series went to describe set ups for gashing and relieving homemade hobs iirc
by Mcgyver
Wed Jun 11, 2008 7:01 pm
Forum: Milling Machines
Topic: Dual Dial Indicator for Mill Head Tramming
Replies: 30
Views: 17505

the pita in tramming the mill is making the adjustments and tightening things back carefully enough that nothing moves.....the indicator part isn't the problem. solution in search of a problem imo and potentially a source of error.
by Mcgyver
Tue Jun 10, 2008 7:53 pm
Forum: General Discussion
Topic: Coolant
Replies: 25
Views: 8151

Like Glenn said, using coolant improves finish and really increases tool life. for now :( mine is a total loss hand held atomizer but for sure flood is on the to do list. I think the rancid coolant tank problem is more from the days when organic soluble oils were used....the only downstroke to the n...
by Mcgyver
Fri Jun 06, 2008 3:22 pm
Forum: General Discussion
Topic: Jose hits the big time!
Replies: 17
Views: 6671

congrats Jose, good for you for commercializing the table. i think you guys are sort confusing 2 things a bit, speed and sensitivity. Speed is desirous but not necessary whereas sensitivity is a must for very small drills. The theoretical speeds for these very tiny drills have little practical meani...
by Mcgyver
Thu Jun 05, 2008 8:19 am
Forum: General Discussion
Topic: How Cut a Female Acme Thread?
Replies: 19
Views: 13952

i haven't single pointed an internal acme thread but a 5/8 internal that is 1.75 long sounds dang near impossible. The acme thread cutting tool, because of the width of cut, undergoes a lot of cutting force and at that length, it is a long of over hang on a spindly boring bar. Then throw in the lowe...
by Mcgyver
Fri May 23, 2008 12:25 pm
Forum: General Discussion
Topic: Knurling Small Diameter Rod
Replies: 7
Views: 4607

Tim, I agree with the other guys if you have to knurl it, but why not use cylindrical loctite? the knurled drill rod will chew the the bore of whatever the gears are made out, unless its something hard. Normally a press fit works by creating compression/tension - if the act of pressing the gear on o...
by Mcgyver
Sun May 18, 2008 3:16 pm
Forum: General Discussion
Topic: Photographing Setups & Processes
Replies: 28
Views: 7639

sorry dg, can't fix the cable problem, but here 's my general comments on workshop photography. 1 - loose the flash, its the biggest way to wreck a pic. Get a tripod and always turn the flash off. 2- for close up, ideally the camera has a macro setting. Most P&S cameras 9 (otherwise known as POS...
by Mcgyver
Sun May 18, 2008 12:43 pm
Forum: General Discussion
Topic: Drill Press Design
Replies: 10
Views: 5238

hing wrong with that. Mcgyver , I'll do a little research on those Buffalo 18s. Thanks! --Bill i didn't mean to imply that that machine is up to milling, far from it. what i meant was that a round column is not indicative of a light or cheap machine and doesn't stand in the way of performance at it...
by Mcgyver
Sun May 18, 2008 9:43 am
Forum: General Discussion
Topic: Drill Press Design
Replies: 10
Views: 5238

it is possible to build such a machine, its called a mill :) Why does a drill press have a single round column? Gee. That seems to be the source of almost EVERY problem. mines a buffalo 18, far from a toy and its a round column.....no problem at all when used for drilling Why couldn't a drill press ...
by Mcgyver
Wed May 14, 2008 8:47 pm
Forum: General Discussion
Topic: Squaring the circle on a shaft?
Replies: 8
Views: 2597

broaching should keep everything concentric, they're expensive to buy for a one of but you can make your own with too much, well ok, they're a bit of trouble to make, but still very doable.
by Mcgyver
Sun May 11, 2008 9:00 pm
Forum: General Discussion
Topic: Can HSS be heated and bent?
Replies: 14
Views: 7089

way to go Dave, straight from the R&D labs! guess i loose the bet
by Mcgyver
Sun May 11, 2008 8:23 pm
Forum: General Discussion
Topic: Can HSS be heated and bent?
Replies: 14
Views: 7089

Haven't done it but I'd bet like most steels get it red and it'll bend easily....but then what? The challenge is in re heat treating it, everything I've ever read says heat treading HSS is tricky, requiring exact temps and not something feasible in the home shop. you won't bend it without heating th...