Search found 1558 matches

by Rich_Carlstedt
Mon Jun 14, 2021 9:09 am
Forum: General Discussion
Topic: .268-40 tap and die ?
Replies: 12
Views: 350

Re: .268-40 tap and die ?

That is really close to a 7 mm -.65 thread (.275 - 39) There is a 9/32 (.281) x 40 thread called a Model Engineer Thread You can check it out here https://www.tap-die.com/contents/en-uk/d160_Model_Engineer_32tpi_40tpi.html Rich In the old days , many manufacturers had their own threads , so they cou...
by Rich_Carlstedt
Wed May 26, 2021 10:42 pm
Forum: General Discussion
Topic: Suggestion to secure a crankcase for fly cutting
Replies: 30
Views: 1362

Re: Suggestion to secure a crankcase for fly cutting

One technique not mentioned here is Plaster of Paris. ( ie POP) When we had tricky thin /flexable/delicate aluminum parts to mill or run on a VTL , we encapsulated it and filled some cavities with Plaster of Paris. It sets up fast ( 10 minutes) and offers rigidity to the part for a skim or light cut...
by Rich_Carlstedt
Tue May 25, 2021 10:51 pm
Forum: General Discussion
Topic: Bevel and pinion gear cutting
Replies: 10
Views: 4055

Re: Bevel and pinion gear cutting

John don't know what the material is so lets start with Steel I would run 100-125 RPM and go full depth of cut- don't do partial depths ( It tends to wear the cutter tips only !) I would shoot for .001" feed per tooth to start, not knowing the rigidity of the part holding That means .014" per revolu...
by Rich_Carlstedt
Thu May 13, 2021 11:06 pm
Forum: General Discussion
Topic: Bevel and pinion gear cutting
Replies: 10
Views: 4055

Re: Bevel and pinion gear cutting

Sorry John. Saying clockwise doesn't help because I don't know which side of the clock you are cutting on. I mean a 3 O'clock clockwise cut is down and if cutting at 9 O'clock, and going clockwise - thats up ?? What you want to look at is where is the "Gullet " is going . The Gullet being formed whe...
by Rich_Carlstedt
Thu May 06, 2021 9:49 pm
Forum: General Discussion
Topic: Casting HDPE - Introduction
Replies: 23
Views: 4226

Re: Casting HDPE - Introduction

Heck. I will not even put food in a plastic anything to warm it in my microwave..... Excellent advice Bill !. Using plastic is a No-No in a Microwave unless it is specifically for that ( restricted additives) Even though i worked in the industry, I use pottery , and not plastic in the microwave Rich
by Rich_Carlstedt
Thu May 06, 2021 9:44 pm
Forum: General Discussion
Topic: Casting HDPE - Introduction
Replies: 23
Views: 4226

Re: Casting HDPE - Introduction

Milk jugs are Low Density Polyethylene (LDPE) or Linear low Density Polyethylene (LLDPE) a pretty safe plastic..I mean it has milk in it ! What is dangerous - heated - is PVC . When heated , PVC gives some nasty gases that qualify you for the Intensive Care Ward Doing it outside is always a good ide...
by Rich_Carlstedt
Wed Apr 28, 2021 10:31 pm
Forum: Home Shop CNC
Topic: Anyone in Madison Wisconsin?
Replies: 2
Views: 1837

Re: Anyone in Madison Wisconsin?

I hear there is a good 'Makers" group in Madison. had a friend go there and He said it was special The location is called the "Bodgery" and the group is called The Mad (ison) City Makers They have a machine shop- check links Rich https://www.thebodgery.org/machining/ https://www.meetup.com/MadCity-M...
by Rich_Carlstedt
Tue Apr 27, 2021 10:05 pm
Forum: General Discussion
Topic: RIP. Bill Chernoff- Shooting Star DRO
Replies: 5
Views: 2106

Re: RIP. Bill Chernoff- Shooting Star DRO

Sorry about that, we'll try again
https://www.dignitymemorial.com/obituar ... f-10144765

yes Andy, that was the kind of guy he was

Rich
by Rich_Carlstedt
Tue Apr 27, 2021 2:05 pm
Forum: General Discussion
Topic: RIP. Bill Chernoff- Shooting Star DRO
Replies: 5
Views: 2106

RIP. Bill Chernoff- Shooting Star DRO

Just learned the sad news that the founder and great vendor Bill Chernoff passed away 3 weeks ago Bill was always close to our hobby and had DRO"S for home shop guys back in the 1990's and would attend Cabin Fever and NAMES shows with his Shooting Star booth. Even the name of his business expressed ...
by Rich_Carlstedt
Sun Apr 25, 2021 6:19 pm
Forum: General Discussion
Topic: Best Tap and Dies for 303, 316 Stainless Steel
Replies: 7
Views: 1700

Re: Best Tap and Dies for 303, 316 Stainless Steel

Stainless is tough because it work hardens , so the tools you use must be up to snuff to handle that. Forgot to recommend Anchorlube for a cutting fluid. Learned that from a precision job shop who only did Stainless steel work. It is "the" goto lube in my shop https://www.mcmaster.com/anchorlube-tap...
by Rich_Carlstedt
Sat Apr 24, 2021 6:12 pm
Forum: Live Steam
Topic: 1” scale rivets
Replies: 25
Views: 11611

Re: 1” scale rivets

Looking at building a riveted tank car. If I use PVC for the tank, in 1” scale any good suggestions for what to use for rivets ? The prototype has pointed head rivets not insurmountable , Buy regular Copper rivets - may need to experiment with size. Either bore a cone in a piece of 1/2' Drill-Rod o...