- Joined
- Dec 20, 2012
- Messages
- 9,422
No, just reduction sleeves that fit into the standard boring tool holders. I don't have pics of the ones that fit my Aloris 4D but these fit my tool holder on my Sherline:
These sleeves hold 3/16" and 1/4" bars and are made of mild steel. They have a slot on one side and a shallow expansion slot on the opposite side to allow compression without cracking. The bore of the sleeve is reamed to a fine finish. Each sleeve is just slipped into a standard boring bar holder and when the screws are tightened, they close the sleeve on the bar and hold it solidly. I have similar sleeves that fit the Aloris 4D that accept 3/16", 1/4", 3/8" and 1/2" bars. Easy and cheap to make but work really well. I would make them instead of buying a special holder, Emilio. Most of the tiny Micro 100 bars have 3/16" or 1/4" shanks.
I do not have my Micro 100 boring bars to take pics of - Bonehead has them and is using them for a project he has. He took every tiny bar I had and has had them for several months. I forgot to record which ones he took and I hope I get them all back - big bucks! That sucker also has my Wilton precision screwless vise, too. Thanks for reminding me to think of him; I better go get my tools before he assumes they are on permanent loan.
Just buy the bars you need. Essentially, you will choose a bar that will fit into your starter hole and still clear chips. The maker will tell you what that minimum bore is. Then just be sure the shank is long enough to get to the bottom of your bore.
These sleeves hold 3/16" and 1/4" bars and are made of mild steel. They have a slot on one side and a shallow expansion slot on the opposite side to allow compression without cracking. The bore of the sleeve is reamed to a fine finish. Each sleeve is just slipped into a standard boring bar holder and when the screws are tightened, they close the sleeve on the bar and hold it solidly. I have similar sleeves that fit the Aloris 4D that accept 3/16", 1/4", 3/8" and 1/2" bars. Easy and cheap to make but work really well. I would make them instead of buying a special holder, Emilio. Most of the tiny Micro 100 bars have 3/16" or 1/4" shanks.
I do not have my Micro 100 boring bars to take pics of - Bonehead has them and is using them for a project he has. He took every tiny bar I had and has had them for several months. I forgot to record which ones he took and I hope I get them all back - big bucks! That sucker also has my Wilton precision screwless vise, too. Thanks for reminding me to think of him; I better go get my tools before he assumes they are on permanent loan.
Just buy the bars you need. Essentially, you will choose a bar that will fit into your starter hole and still clear chips. The maker will tell you what that minimum bore is. Then just be sure the shank is long enough to get to the bottom of your bore.