<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>CR4 - Recent Forum Threads and Blog Entries</title><link>https&#x3a;&#x2f;&#x2f;cr4.globalspec.com</link><description><![CDATA[Recent content from CR4, The Engineer&#x27;s Place for News and Discussion]]></description><copyright>Copyright 2026</copyright><pubDate>Mon, 19 Oct 2026 13:59:20 EST</pubDate><generator>https&#x3a;&#x2f;&#x2f;cr4.globalspec.com</generator><item><title><![CDATA[2021 Blazer Fuel Capacity ]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151739&#x2f;2021-Blazer-Fuel-Capacity&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Every gas pump I use, no matter where in the USA, the fuel automatically stops pumping at about 15.5 to 16 gallon level in the tank. If I pump very slowly, I can add 4 more gallons to the tank. Some gas pump nozzles won&#x27;t allow me to pump in the extra 4 gallons. The car is supposed to hold 19.4 gall]]></description><pubDate>Mon, 19 Oct 2026 13&#x3a;59&#x3a;20 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151739&#x2f;2021-Blazer-Fuel-Capacity]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Sealant for MMA Mold]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151738&#x2f;Sealant-for-MMA-Mold&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Hi everyone, i need a sealant for my molds made of MMA which I use to produce ceramic sinks. Now I use 2k weicon flex 310 m but it&#x27;s liquid initially and saggy that I can&#x27;t use on vertical parts. I want shore 80A at most, 1 mm thickness, bonds to one part very good and stay there long, doesn&#x27;t bond]]></description><pubDate>Sat, 17 Oct 2026 15&#x3a;57&#x3a;00 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151738&#x2f;Sealant-for-MMA-Mold]]></guid><dc:creator>spatan</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Bonding Tempered Glass To Glossy ABS]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151736&#x2f;Bonding-Tempered-Glass-To-Glossy-ABS&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Hello&#x21; Anyone have a suggestion for an adhesive&#x2f;sealant&#x2f;glue that will bond tempered glass to glossy ABS plastic&#x3f; Constraints are&#x3a; &#x2a;This a sliding door handle of a horizontal ice-cream refrigerator which is -20 C inside, &#x2a; don&#x27;t prefer 2K adhesives or sealants, &#x2a; handling time 2-3 hours, &#x2a; breaking]]></description><pubDate>Fri, 16 Oct 2026 09&#x3a;09&#x3a;03 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151736&#x2f;Bonding-Tempered-Glass-To-Glossy-ABS]]></guid><dc:creator>spatan</dc:creator><dc:subject>Chemical &#x26; Material Science</dc:subject></item><item><title><![CDATA[Space Jellyfish]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151729&#x2f;Space-Jellyfish&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Cool sky about 15 minutes after the launch today.&#xa;&#xa;&#xa;&#xa;&#xa;&#xa;&#xa;&#xa;LAUNCH&#x3a; 6&#x3a;33&#xa;&#xa;PICTURE TAKEN&#x3a; 6&#x3a;49&#xa;&#xa;OFFICIAL SUNRISE&#x3a; 7&#x3a;21&#xa;&#xa;Previous cool sky&#x3a; https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;103096&#x2f;Early-Morning_launches_are_Great .]]></description><pubDate>Tue, 13 Oct 2026 13&#x3a;05&#x3a;01 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151729&#x2f;Space-Jellyfish]]></guid><dc:creator>BruceFlorida</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Two-Post Car Lift Lowering Unevenly]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151725&#x2f;Two-Post-Car-Lift-Lowering-Unevenly&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[I picked up a used two post lift recently and noticed that it doesn&#x26;rsquo&#x3b;t always lower evenly. When I raise a vehicle, both sides seem to come up normally, but when lowering, one side starts moving before the other and I have to stop and reset it.&#xa;&#xa;I checked the hydraulic lines for leaks and didn&#x26;]]></description><pubDate>Wed, 07 Oct 2026 14&#x3a;01&#x3a;10 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151725&#x2f;Two-Post-Car-Lift-Lowering-Unevenly]]></guid><dc:creator>MalcAndCheese</dc:creator><dc:subject>General Discussion</dc:subject></item><item><title><![CDATA[Air Compressor Pressure Drops During Operation]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151721&#x2f;Air-Compressor-Pressure-Drops-During-Operation&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Good day,&#xa;I am having an issue with an air compressor in our workshop. The compressor reaches the required tank pressure normally when there is no demand, but when we operate pneumatic tools the pressure drops and the compressor cannot maintain it.&#xa;I have checked for obvious air leaks and the intake]]></description><pubDate>Thu, 01 Oct 2026 14&#x3a;39&#x3a;59 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151721&#x2f;Air-Compressor-Pressure-Drops-During-Operation]]></guid><dc:creator>MalcAndCheese</dc:creator><dc:subject>Mechanical Engineering</dc:subject></item><item><title><![CDATA[How Much Engineering is Still Done by Hand These Days&#x3f;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151718&#x2f;How-Much-Engineering-is-Still-Done-by-Hand-These-Days&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[With CAD, simulation and all the software we have now, I&#x26;rsquo&#x3b;m curious how much time engineers actually spend doing calculations or working things out manually.&#xa;&#xa;Do you guys still do a lot of back-of-the-envelope calculations before going anywhere near the computer&#x3f;]]></description><pubDate>Fri, 25 Sep 2026 16&#x3a;08&#x3a;43 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151718&#x2f;How-Much-Engineering-is-Still-Done-by-Hand-These-Days]]></guid><dc:creator>MalcAndCheese</dc:creator><dc:subject>Civil Engineering</dc:subject></item><item><title><![CDATA[Schneider Atv 630 SCF1 and SCF3 Fault]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151715&#x2f;Schneider-Atv-630-SCF1-and-SCF3-Fault&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[I have tried to reset the SCF1 and SCF3 faults on the Schneider Atv 630 to no avail. Even after following all the indicated processes from the manual, the alarm won&#x27;t clear off.&#xa;&#xa;The motor windings are okay.&#xa;&#xa;The cable from VFD output to the motor is also okay.&#xa;&#xa;Is there any other remedy or I have t]]></description><pubDate>Wed, 23 Sep 2026 08&#x3a;12&#x3a;58 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151715&#x2f;Schneider-Atv-630-SCF1-and-SCF3-Fault]]></guid><dc:creator>Anonymous Poster</dc:creator><dc:subject>CR4 Feedback</dc:subject></item><item><title><![CDATA[Noiseless Contactors and Relays]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151714&#x2f;Noiseless-Contactors-and-Relays&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[I wonder where can we purchase noiseless brand of contactors&#x2f;Relays. Totally winner concept.&#xa;&#xa;What can you recommend guys&#x3f;&#xa;&#xa;Thanks&#x21;]]></description><pubDate>Mon, 21 Sep 2026 07&#x3a;43&#x3a;44 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151714&#x2f;Noiseless-Contactors-and-Relays]]></guid><dc:creator>gutmonarch</dc:creator><dc:subject>Electrical Engineering</dc:subject></item><item><title><![CDATA[U Tube Bundle Inspection]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151713&#x2f;U-Tube-Bundle-Inspection&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Good day,&#xa;&#xa;I have query about the U Tube bundle, ECT and IRIS can be done on the straight tubes while the U tube bundle have curve, then how to do the inner inspection for the bend section of U bundle. the bend is at 90 degree.&#xa;&#xa;any tools in the market to perform for these tubes&#x3f;]]></description><pubDate>Sun, 20 Sep 2026 04&#x3a;20&#x3a;13 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;thread&#x2f;151713&#x2f;U-Tube-Bundle-Inspection]]></guid><dc:creator>Conan21</dc:creator><dc:subject>Mechanical Engineering</dc:subject></item><item><title><![CDATA[Breaking up a horseshoe &#x28;Oct. 2026 Challenge Question&#x29;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30544&#x2f;Breaking-up-a-horseshoe-Oct-2026-Challenge-Question&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[You have this iron horseshoe. You are also a talented machinist.&#xa;&#xa;&#xa;&#xa;1. Can you cut this horseshoe into 6 different pieces, using two straight cuts, without repositioning the workpieces&#x3f;&#xa;2. Can you cut this horseshoe into 6 different pieces - each piece with a hole - using two straight cuts&#x3f; Yes, you]]></description><pubDate>Thu, 01 Oct 2026 04&#x3a;00&#x3a;00 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30544&#x2f;Breaking-up-a-horseshoe-Oct-2026-Challenge-Question]]></guid><dc:subject>Challenge Questions</dc:subject></item><item><title><![CDATA[QAADS 2016&#x3a; Plastic Materials Making Flight Light]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;27563&#x2f;QAADS-2016-Plastic-Materials-Making-Flight-Light&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[The Quadrant Aviation Aerospace &#x26;amp&#x3b; Defense Symposium &#x28;QAADS&#x29; will take place on Thursday, November 3 in Long Beach, CA. QAADS will address concerns and challenges faced by the aviation, aerospace, and defense industry, matched with actionable strategies from the top minds in high-strength lightwe]]></description><pubDate>Fri, 11 Sep 2026 04&#x3a;00&#x3a;00 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;27563&#x2f;QAADS-2016-Plastic-Materials-Making-Flight-Light]]></guid><dc:creator>QGuy</dc:creator><dc:subject>Aerospace Blog</dc:subject></item><item><title><![CDATA[The Line Illusion &#x28;September 2026 Challenge Question&#x29;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30543&#x2f;The-Line-Illusion-September-2026-Challenge-Question&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[How many lines are there in these pictures&#x3f; Explain the phenomenon depicted. &#x28;Apologies for the freehand Sharpie&#x21;&#x29;&#xa;&#xa;Figure 1&#xa;&#xa;&#xa;&#xa;Figure 2&#xa;&#xa;&#xa;Answer, updated 9.25.26&#xa;Rixter gets in in &#x23;1 below.]]></description><pubDate>Mon, 31 Aug 2026 04&#x3a;00&#x3a;00 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30543&#x2f;The-Line-Illusion-September-2026-Challenge-Question]]></guid><dc:subject>Challenge Questions</dc:subject></item><item><title><![CDATA[Chess Test &#x28;August 2026 Challenge Question&#x29;]]></title><link><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30542&#x2f;Chess-Test-August-2026-Challenge-Question&#x3f;from_rss&#x3d;1]]></link><description><![CDATA[Use the three white pieces to place the black king &#x28;e5&#x29; in checkmate.&#xa;&#xa; &#x2a; You do not need to simulate moves to arrive here.&#xa; &#x2a; Abide standard chess piece movements.&#xa;    &#x2a; King can move one space in any direction, but never into check&#xa;    &#x2a; Rooks can move any number of spaces, but only vertically or]]></description><pubDate>Fri, 31 Jul 2026 04&#x3a;00&#x3a;00 EST</pubDate><guid><![CDATA[https&#x3a;&#x2f;&#x2f;cr4.globalspec.com&#x2f;blogentry&#x2f;30542&#x2f;Chess-Test-August-2026-Challenge-Question]]></guid><dc:subject>Challenge Questions</dc:subject></item></channel></rss>