Machining for port work

[Mastermind]

One of the single best things I've done is the start wearing rubber coated gloves when I use these tools. My hands don't hurt like they used to.

 

[Moparmyway]

I bought one of these on a tip from scarr.
By far the best I've used, runs cooler then the Foredom and smoother.

Well worth the extra $ over the smaller Foredom.

http://www.mastercarver.com/new-detail-pro-hd-handpiece/

I'm sorry. The T44 is the one I meant. Had to look it up. It will run any collet from 1/8 - 1/4".

Good stuff men !!!
Much appreciated !!!!

 

[mdavlee]

I have some gloves with thin padding. Cheap from Lowe's I believe and knocks down the vibrations

 

[jmssaws]

One of the single best things I've done is the start wearing rubber coated gloves when I use these tools. My hands don't hurt like they used to.

I didn't wear them for to long and it bout ruined my right hand.
Seems I don't death grip the right angle as bad with gloves on.

I've also started wearing a apron to keep shavings off my clothes.

 

[super3]

I tried several different wraps and like this the best. Rubbery and more cushion.
3M splicing tape. Enough on a roll for 3-4 tools.

 

[srcarr52]

I put thick heat shrink on the RA's for traction.

Mastercarver has a 3 jaw chuck that can hold 1/4" shafts, runs really smooth and cool. Great for big aluma hogs or split mandrels.

 

[super3]

I tried the thick heat shrink, I like the splicing tape better.
What feels good to me may not be worth a *f-word to others.

 

[dieselfitter]

Here is a mandrel I made for cutting base and squish. I used Delrin with a steel stub pressed into it. I had to grind a little more off the top of the stub for it to fit within the combustion chamber. The set screw keeps the cutter from moving radially. The Delrin is easy on the aluminum bore on the Poulan 3800 cylinder that I made it for. If I every need a mandrel for a slightly larger bore, I'm going to add grooves with O rings to increase the diameter slightly. I leave the mandrel in the lathe after cutting the base. Then I hold the cylinder by hand with the lathe on at low speed. This stuff works awesome for a nice chatter free cut when cutting squish. http://www.ajaxtoolsupply.com/tapma...ySpzXABx8EAg6w1U3xht8eV-C2JQwqsqzkaAtdL8P8HAQ

 

[dieselfitter]

Just finished another one for 52mm bore.

 

[paragonbuilder]

Here is a mandrel I made for cutting base and squish. I used Delrin with a steel stub pressed into it. I had to grind a little more off the top of the stub for it to fit within the combustion chamber. The set screw keeps the cutter from moving radially. The Delrin is easy on the aluminum bore on the Poulan 3800 cylinder that I made it for. If I every need a mandrel for a slightly larger bore, I'm going to add grooves with O rings to increase the diameter slightly. I leave the mandrel in the lathe after cutting the base. Then I hold the cylinder by hand with the lathe on at low speed. This stuff works awesome for a nice chatter free cut when cutting squish. http://www.ajaxtoolsupply.com/tapma...ySpzXABx8EAg6w1U3xht8eV-C2JQwqsqzkaAtdL8P8HAQ
View attachment 42287

What is delrin?

 

[dieselfitter]

Plastic, it is a brand name/trademark for what I think is nylon. I get it from McMaster Carr

 

[Gunn]

It's another name for acetal

 

[plcnut]

What is delrin?

https://en.wikipedia.org/wiki/Polyoxymethylene

 

[dieselfitter]

Thanks guys. I was hoping someone more knowledgeable would clarify. It easy to work with. Cuts like butter.

 

[Mattyo]

cheaper than working with aluminum?

 

[dieselfitter]

Just checked at McMaster Carr. $27 per foot of 2 1/2" vs. $38
There are other plastics costing less but I don't know how suitable they are.

 

[CR888]

I did a bit of research B4 buying my rotary flex shaft. The best performer on paper was the 1/2hp Mastercarver. The 'Ultimate' kit came with 2 handpieces, burrs etc. I have not owned a Foredom so can't compare them but I'm happy with the M/carver. At 1/2 HP / 30,000rpm with a bench dial control & foot pedal you have good control and power. I am not sure I'd be happy with a 1/8hp unit although those who own them are happy with performance. But you can spend a bunch on high end CCspecialty handpieces. I was gonna get a knockoff Fordom for 1/5th of the price but Randy who spends many hours grinding once said in a porting tools thread 'buy the best tools you can afford, you'll thank me later', so I am slowly buying the good stuff a bit at a time.

 

[Deets066]

Bringing this thread back, thought I’d share how I find the side of the jug when cutting squish.

 

[Deets066]

 

[dustinwilt68]

394 cylinder?