Search found 7203 matches
- Sun Oct 22, 2023 12:56 pm
- Forum: General Discussion
- Topic: cutting the column on a drill press - how much to cut?
- Replies: 57
- Views: 20914
Re: cutting the column on a drill press - how much to cut?
Be aware that side loading a tapered spindle mount isn't advisable. It will eventually come loose at the most inopportune time.
- Sun Oct 15, 2023 6:51 am
- Forum: General Discussion
- Topic: First attempt at watch making
- Replies: 18
- Views: 4400
Re: First attempt at watch making
I cheat! I use a stainless cutting oil in the flood system on my lathe. 304 likes that as does pre-hard 4140.
RSG's work is always incredible, from the design to the execution.
RSG's work is always incredible, from the design to the execution.
- Sat Oct 14, 2023 4:25 pm
- Forum: General Discussion
- Topic: First attempt at watch making
- Replies: 18
- Views: 4400
Re: First attempt at watch making
Probably a year or two ago I ran across a site from a chemical company that sold a citric acid based product for passivating stainless that looked interesting.
I switched to 304 and haven't seen any rust since. Nicer finish as well.
- Sat Oct 14, 2023 11:01 am
- Forum: General Discussion
- Topic: First attempt at watch making
- Replies: 18
- Views: 4400
Re: First attempt at watch making
More amazing workmanship!
I just hope you have better luck with 303 rusting than I have...
I just hope you have better luck with 303 rusting than I have...
- Mon Oct 09, 2023 9:09 am
- Forum: General Discussion
- Topic: The price of brass — gasp!
- Replies: 22
- Views: 8465
- Fri Oct 06, 2023 3:23 pm
- Forum: General Discussion
- Topic: slot chisel
- Replies: 45
- Views: 13454
Re: slot chisel
That's unfortunate. That's a lot of runout for a gear.
- Wed Oct 04, 2023 8:48 am
- Forum: General Discussion
- Topic: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
- Replies: 36
- Views: 7390
Re: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
I agree that he doesn't need a true radius, but he keeps coming back to trying to wanting to calculate bend allowance to cut the sheet to size prior to bending, which is difficult without knowing a fairly true radius. All goes back to a very early post in this discussion that really the only way to ...
- Wed Oct 04, 2023 7:35 am
- Forum: General Discussion
- Topic: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
- Replies: 36
- Views: 7390
Re: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
Brakes generally have a way to adjust the position of the top bending edge in relation to the pivot point. This is needed to account for various thickness's of material. The further back from the fold pivot the more radius you get. Just changing the setback alone will result in an odd shaped bend t...
- Tue Oct 03, 2023 5:22 pm
- Forum: General Discussion
- Topic: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
- Replies: 36
- Views: 7390
Re: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
The only way you are going to figure any of this out is to bend a test piece.pollys1dad wrote: ↑Tue Oct 03, 2023 3:45 pm Did you see the photos I posted of the metal folder I have?
- Tue Oct 03, 2023 3:18 pm
- Forum: General Discussion
- Topic: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
- Replies: 36
- Views: 7390
Re: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
If the shape in the first post is what you are trying to bend, you might not be able to do it with your brake depending on which direction the bends are. If the bend lines are the 300mm direction you might be out of luck trying to make all 90 degree bends. You may only be able to complete three bend...
- Sun Oct 01, 2023 3:45 pm
- Forum: General Discussion
- Topic: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
- Replies: 36
- Views: 7390
Re: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
Once you have a bend made, Measure the "A" dimension. If it is too short, move your bend line out accordingly. If too long, move your bend line in accordingly. Once you have that, measure the "B" dimension. If too short, widen the panel accordingly. If too long, narrow it. You ne...
- Sun Oct 01, 2023 10:43 am
- Forum: General Discussion
- Topic: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
- Replies: 36
- Views: 7390
Re: Allowing For Bending Radius Folding 3mm Small Aluminium Sheet
Since you are not using a press brake and setting up for production, here is the short version. Take a test panel and place a line down the center of the panel. Make your bend. Measure dimension "A". Is it the proper dimension from center? Measure dimension "B". Is it the proper ...