Poor mans porting tools ... vid...

[Dub11]

same idea.. i bought the carbides separate ... but some people bundle them I guess.

I was just asking if the tips that came in this set would even work?

 

[Mattyo]

ah, uh, probably. as long as the shank is 2.35mm ... they will fit in a latch handpiece w/ the right amount of grinding. as far as the head shape, likely need lots of different shapes and options for ideal port work.... so those heads are probably a good start

 

[Mattyo]

Yep, you have to be keen to do it. However, after you get the top part of the port the way you want it, then you can adjust the timing. Admittedly, I'd rather have the right porting tools to do the job, but this is a thread for a 'poor man's porting tools'.

Considering the time spent, most guys would be better off sending the jug to a professional porter with the right tools.

so if it costs lets say... $150 ish per cylinder head to send to a pro porter... getting a marathon handpiece setup and few carbides IS less than that. so it starts to make $$ sense if you are gonna do more than one cylinder head.

the difference ultimately being that a pro porter can squeeze that last few percentage points of power out of the saw. then its a value judgement

 

[srcarr52]

I've used dental latch style heads for a while now for really small cylinders. I find they don't hold up with 1/4" burrs but they will with a 3/16 single cut (SE-53). The good think is that a push button head cost less than $15 shipped. Also, I've never been able to find decent 3/32" (2.35mm) burrs, all of them have been dull from day one. Instead I grind down the shaft of an 1/8" shank and grind the drive tang and latch groove in with a toolpost grinder on my lathe.

This is the push button latch dental head adapter I made next to the CC 128MC. It's great for getting into small cylinders. Sorry I don't have a picture of the current size burr I like to use on them.

 

[Czed]

Seems like they will work for a while at least. The motor doesn't have much torque at low speed though.

They can last an eternity with walmartz no question's asked return policy.

 

[Mattyo]

I'll keep fiddling.... we shall see how long these chinese things last ...AND where the point of failure is. I can imagine the heads going out, but for so cheap... replacing them would be no big deal. also, i gotta find a fairly inexpensive reduction head....that'll help

 

[Czed]

26.40 shipped from ebay save's the more you buy.

 

[Mattyo]

R u sure those are 2.35mm shank?

 

[Czed]

I've had two sets for years never checked just have the dremel with adjustable chuck works great.

 

[Mattyo]

3mm is usual dremel I think.... but you need 2.35mm for latch

 

[junkman]

These air powered mini grinders you can turn the speed up and down by turning the black plastic band ,ran one for a bit so far ,did not ice up on me at all .Got bit kits also ,a snap on one and a dremil one ,tool truck had them on the truck .

 

[Mattyo]

What kind of $$ for those? The at1070ra isn't anywhere else online.

 

[junkman]

I can check ,somewhere around $200 off the snap on truck though ,the bits were somewhere in $100 range for the kit,the dremil kit was cheap $20 or $40 dollars i think

 

[Mattyo]

Would be nice to have a relatively inexpensive air driven piece....problem with the blue point stuff, apparently the RA isn't readily availble... ie..not for sale on the internet. still nice to know such a product exists

 

[Czed]

About 84.00 for this one ebay 3mm

 

[Czed]

22.00 ebay

 

[Czed]

I don't know anything about them but they is cheap.

 

[Czed]

25.00 1/8 kit

 

[Mattyo]

link: http://www.ebay.com/itm/3MM-Micro-A...477196?hash=item33c978ebcc:g:gdsAAOSw2gxYtAAS

 

[Mattyo]

still needs a compressor, and a foot pedal for control... but the prices are more reasonable... the likelyhood they'll hold up is low, but ... who knows