Cutting sheet 4130

A forum about all aspects of the construction and maintenance of the Billy Dawson inspired modified Hatz Classic biplane. Here is the place to ask your questions and get the answers from the real experts.
orchardair
Posts: 215
Joined: Thu Apr 08, 2010 4:56 pm

Cutting sheet 4130

Post by orchardair »

Hatzers,
I am having the 0.090" and thicker material cut by a water-jet shop, but can I use aviation snips on 0.050" and thinner sheet?
if not, what did you use for cutting the thin (0.050, 0.032, 0.025) sheet material?
Thanks!
Hatz Classic plans# 136
JBMoore
Posts: 236
Joined: Wed Mar 17, 2010 5:44 am

Re: Cutting sheet 4130

Post by JBMoore »

I didn't have much luck with tin snips no matter what the thickness unless it was just snipping a corner or slight trim.
Most of the time I used the band saw and a file. If you know someone with a shear, you can cut strips and go from there.

Jeff Moore
Jeff Moore
Treasurer-HBA
Pendleton, IN.
mtaylor
Posts: 255
Joined: Tue Mar 23, 2010 5:11 pm

Re: Cutting sheet 4130

Post by mtaylor »

I bought a cheapie air powered 3" cut off tool from Harbor freight, about 12 bucks, and cut all my steel with it, then work down with a file or on my belt sander.. The cut off wheels are pretty thin so not much metal is wasted. Just use eye protection!
orchardair
Posts: 215
Joined: Thu Apr 08, 2010 4:56 pm

Re: Cutting sheet 4130

Post by orchardair »

Thanks for the ideas. I do have a cheapo air die-grinder from HF. I'll try that. What do you think about a shear, like this one:
http://www.use-enco.com/CGI/INSRIT?PART ... A=130-5710
Image
Hatz Classic plans# 136
User avatar
Ebby
Posts: 109
Joined: Wed Mar 17, 2010 7:32 pm
Location: Camden NY

Re: Cutting sheet 4130

Post by Ebby »

I bought a plate shear like the one shown. I've cut .125" with it. I has a short throat and strips tend to curl. Works good to make a rough cut just outside your lines then file, grind or sand. Once CAD drawings became available I had many pieces laser cut. What a time saver and not that expensive. But I digress. The plate shear saved me a lot of time fabricating tabss and brackets not shown in the plans.
Ebby
Hatz Classic S/N 37
Flying!
wltrmtty
Posts: 3
Joined: Sun Jun 01, 2014 3:47 pm
Location: Kenosha, Wisconsin

Re: Cutting sheet 4130

Post by wltrmtty »

I bought a Lenox 52 tooth titanium tipped steep cutting blade for my table saw and have no problem cutting 0.090 4130 sheet. I move slow and lube the blade with Boelube, but I am very happy with the results.
Terry Gandy
Clifford Hatz
Posts: 19
Joined: Thu Mar 18, 2010 7:22 am

Re: Cutting sheet 4130

Post by Clifford Hatz »

If you buy a good Beverly shears like the one shown you will never regret it.
Clifford
wltrmtty
Posts: 3
Joined: Sun Jun 01, 2014 3:47 pm
Location: Kenosha, Wisconsin

Re: Cutting sheet 4130

Post by wltrmtty »

Thanks for the suggestion, Clifford. I'll look when I'm at OSH.
Terry Gandy
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